US 2374165

I'll verify the record with targeted searches before summarizing.

US 2,374,165 — Verification and Summary

Search/verification result (important caveat first)

I ran searches against the numeric string 2374165. Every hit was a different document — none was US 2,374,165:

No CAFC 2026 docket and no USPTO litigation/PTAB record referencing US 2,374,165 was found. Treat that as "none found," not as certified absence — I cannot see sealed matters, and the identifier collides with unrelated foreign documents sharing the same seven digits. Practically, US 2,374,165 has a listed legal status of "Expired – Lifetime," anticipated expiration 1962‑04‑24, so a live 2026 appeal is highly implausible (at most, a hypothetical past-damages suit inside the §286 limitations window).

The summary below is therefore grounded in the authoritative full text of the patent (Google Patents: https://patents.google.com/patent/US2374165/en), not in search hits.

Bibliographic data

Abstract

Uncertainty note: this is a 1945 patent, filed before abstracts were a separate formal requirement. The Google Patents record contains no separately labeled abstract; its "Definitions" block reproduces the opening of the specification, namely the stated object — the provision of a pair of brackets which may be readily mounted upon the surface of a window casing and which are equipped for supporting therebetween a window shade, curtains and drapes — followed by the list of Figures 1–6. If you need a true abstract, it must be reconstructed from the specification, not quoted.

The invention in plain terms

Two mirror-image bracket assemblies (5, 6) mount to the left and right sides of a window casing. Each assembly is built in nested layers:

1. A shade roller bracket (numeral appears OCR-mangled as "1"; contextually 7) with an apertured attaching flange 8 for fastening screws 9 to the casing face, and a lateral top flange 10 turning up into a vertical arm 11.
2. A larger U-shaped curtain-rod bracket 12, whose arm 13 lies flat against one side of arm 11; its arm 14 stands parallel to arm 11 and carries a diagonal slot 15 in its upper edge. Its web has an opening for a fastener 16a that also anchors it to the casing.
3. A smaller U-shaped curtain-rod bracket 17 (roughly half the size, nesting inside bracket 12), whose arm 18 bears face-to-face on the opposite side of arm 11 and is fixed with bolts or rivets 19 through registering holes in arms 11, 13, and 18. Its arm 20 sits between arms 11 and 14 with its own inclined slot 21. The upper edges of arms 13 and 18 are joined by web 22.
4. Sectional channel-shaped curtain/drape rods 23 and 24 carry channel-shaped adapters 25 at their ends; transverse pins 26, 26′ in the adapters seat in slots 15 and 21, so the rod ends drop onto and are retained by the bracket arms (rod-to-rod sliding joint per Fig. 5; rod end detail per Fig. 6).

Net effect: one pair of casing brackets simultaneously holds a roller shade (between brackets 7) plus two rods — an outer/forward rod for drapes or valance and a second rod for curtains — each rod being detachable via pin-in-slot engagement.

Independent claims in plain language

The executed patent carries 4 claims. Based on the fetched text, claims 1, 3, and 4 are independent; claim 2 appears to depend on claim 1 (its visible preamble refers back to a channel member/curtain rod of the type introduced in claim 1).

• Claim 1 — A bracket assembly comprising: (a) a bracket member with an apertured attaching flange at one edge and a lateral top flange merging into an upright arm; and (b) a substantially U-shaped bracket whose first arm contacts the upright arm on one side and whose second arm is parallel to the upright arm and shaped to be engaged by a curtain-rod end; plus (c) a second, related bracket structure. Caveat: the OCR of claim 1 is truncated mid-sentence ("...and a second sub—"), so the closing limitation of claim 1 cannot be quoted verbatim from this source. The missing text is evidently the second U-shaped sub-bracket (element 17) and its rod-supporting arm.
• Claim 2 (dependent) — Directed to the channel-shaped curtain rod itself: a channel member open along its upper edge that receives a bracket arm in its channel; the arm has a notch in its upper edge, and a pin bridges the sides of the channel member and engages the notch to detachably support the channel member on the arm.
• Claim 3 — A bracket assembly with a shade roller bracket having casing-mounting means at one vertical edge and a lateral top flange merging into an upstanding arm, combined with a pair of U-shaped bracket members whose first arms are secured to each other and supported on the upstanding arm, and whose second arms are laterally spaced from one another, each receiving a curtain-rod end. (In short: one casing bracket feeding two side-by-side rod supports.)
• Claim 4 — Same shade-roller-bracket premise (mounting means, offset forming an upstanding arm) plus a pair of U-shaped brackets whose two inner arms are connected at their upper edges and rest on the upstanding arm, while the remaining arms each have an inclined slot extending downwardly from the upper edge to receive channel-shaped curtain rods with transverse pins seated in those slots.

Uncertainty note: the claim set is reproduced here from an OCR rendering that mangles the numeral "1" against "7," "I" against "l," and "13/18" style pairs (e.g., "mer ing" for "merging," "bracket I!" for bracket 17, "arm 2d" for arm 24). Verbatim claim language should be confirmed against the USPTO PatentCenter/Patent Public Search PDF or the printed patent before being cited in any legal or prosecution context. The description's original Fig. 2 caption also reads "taken substantially one line 2‑2" (i.e., "on line 2‑2"), another OCR artifact.

I'll search for litigation involving US 2,374,165.

Let me try more targeted searches on litigation databases.

Let me check the Unified Patents litigation portal and CourtListener directly.

No litigation found for US Patent 2,374,165

I searched for litigation involving US Patent 2,374,165 ("Combination curtain, drape, and shade holder," inventor Arrie Barbee, filed December 17, 1943, granted April 24, 1945) and found no known patent litigation — no district court infringement suits, no CAFC appeals, no PTAB proceedings, no ITC investigations.

What the record shows

• Assignee: Individual (Arrie Barbee). No corporate assignee ever recorded, and no subsequent assignment/reassignment of record that would suggest a commercialization or enforcement program.
• Legal status: Expired – Lifetime. The anticipated expiration date shown is April 24, 1962 (17 years from grant under the law then in force). The patent has therefore been in the public domain for over six decades and is not assertable.
• Cited By (forward citations): Four later patents (US 2,738,154; US 5,564,666; US 7,252,201; US 9,872,580). Forward citations are patent citations only — these are not litigation references.
• No litigation evidence in any secondary source. The Google Patents page for this patent (https://patents.google.com/patent/US2374165/en) lists no "Litigation" or "Lawsuits" section, which is where patent platform records (e.g., Docket Alarm / Unified Patents / RPX-sourced data) would appear if cases existed.

Important warning about false positives

A number of unrelated records surface for the string "2374165." None of these involve US Patent 2,374,165 — I flag them so they are not mistaken for this patent:

Caveats on my search

• I was unable to run exhaustive queries against PACER, Docket Navigator, or the Unified Patents litigation portal directly (their case-list pages aren't fully indexable by general web search), so I could not do a name-by-name docket sweep for a case in which this patent was asserted.
• However, US patents that expired before 1962 are extraordinarily unlikely to appear in any electronic litigation database, because those databases generally begin coverage in the 1990s–2000s, long after expiration. The absence of any reference to this patent in litigation-level sources is therefore consistent with — and best explained by — the patent having expired in 1962.

Conclusion

No litigation is known involving US Patent 2,374,165. For each requested category the answer is the same: there are no plaintiff(s), defendant(s), jurisdiction, case numbers, filing dates, or outcomes to report. If you need certainty beyond what public search can establish, a direct Docket Navigator or Lex Machina query with the exact patent number is the appropriate next step, but I would not expect it to return results given the 1962 expiration.

I'll verify the structured data with targeted searches before writing the analysis.

Proceedings overview

Zero (0) AIA trial proceedings on file — no IPRs, no PGRs, no CBMs, no derivation proceedings, no PTAB appeals — so there is nothing to break down by active / invalidated / sustained / settled / institution-denied, and the defensive posture is not "hardened by surviving IPRs," it is "the patent is dead and any demand letter citing it is sanction-bait." US 2,374,165 issued 1945-04-24, was filed 1943-12-17, and its pre-1995 seventeen-year term ran out on 1962-04-24 (the "Anticipated expiration" entry in the structured data), fifty years before the AIA trial regime existed (PTAB AIA trials only became available for petitions filed on or after 2012-09-16). This is not a case of a patent whose PTAB record is thin — it is a patent that could not have had one, and whose enforcement window closed before the Federal Circuit was created.

Proceedings by proceeding

None. There is no proceeding number to report, and per the operating rules I will not manufacture one. For completeness, here is what each AIA vehicle could and could not have been:

• Type: N/A — no proceeding docketed
• Filed: N/A
• Status: The structured ODP block states plainly that the API returns no AIA trial proceedings for this patent as of the most recent ingest; my independent web searches (PTAB numbers, "2374165," petitioner/inventor names, CourtListener) surfaced no proceeding, FWD, or PTAB appeal.
• Judge panel: None. No APJ has ever sat on this patent.
• Petition grounds: None. No claim of 2,374,165 has ever been construed by the Board.
• Institution decision: None.
• Final Written Decision: None. Not one of claims 1–4 has been canceled, confirmed, or even addressed by the Board.
• Settlement / termination: None.
• Appeal: None.
• Defensive value: A defendant does not need an IPR defense here. The patent expired 1962-04-24, so a present-day demand letter asserting it is facially meritless — the correct response is a letter pointing to the printed expiration date, with 35 U.S.C. § 285 / Rule 11 exposure preserved against the sender if the assertions continue.

Search-noise flags (things that look like proceedings but are not)

Because "2374165" is a crowded numeral, flag these so a defendant's counsel doesn't chase them:

1. "Cited By (4)" in the Google Patents record is not PTAB activity. Those four are later patents citing 2,374,165 as prior art: US2738154A ("Hanger," Homer R. Mason, 1956-03-13), US5564666A ("Mounting bracket for curtain rods," Kenney Manufacturing Company, 1996-10-15), US7252201B1 ("Designer dorm rod," Crystal Savage, 2007-08-07), and US9872580B1 ("Curtain rod and window blind holder," Kelvin Roddy, 2018-01-23). A prior-art citation is not a validity challenge.
2. EP 2374165 is an unrelated Lumileds LED assembly; CA 2374165 is a counter-mounted soap dispenser; FR 2374165 is a dot-matrix printer; and a 2024 European Journal of Psychotraumatology article carries article number 2374165. Same numerals, different subject matter and different jurisdictions.
3. Barbee v. United States, 867 F.2d 616, [1989] USCAFED 50 / 10 USPQ2d 1316 (Fed. Cir. 1989), appears in results for "Barbee." I found no evidence linking it to US 2,374,165 or to inventor Arrie Barbee, and it is not a PTAB proceeding or a PTAB appeal — treat the name overlap as coincidence unless an independent record shows otherwise. I am expressly not asserting a connection I could not verify.
4. Kind-code note: the "A" in US2374165A is Google Patents' retroactive kind code applied to pre-1976 US grants, not a separate publication. The authoritative document is the 1945 grant, 4 claims.

Strategic summary

Claim status of US 2,374,165 (4 claims total): none CANCELED, none SUSTAINED, all four UNTESTED in any AIA trial — but untested is not a threat, because all four are expired and unenforceable. Claim 1 is directed to the bracket assembly (shade-roller bracket with apertured attaching flange and lateral flange merging into an upstanding arm, plus a U-shaped curtain-rod bracket whose arm contacts the upstanding arm at one side); claim 2 (whose text is partly garbled by OCR in the published copy, though its gist is a channel-shaped curtain rod carrying a transverse pin engageable in the bracket arm's notch) covers the rod-to-bracket detent coupling; claim 3 covers the shade-roller bracket plus a pair of U-shaped bracket members with laterally spaced rod-engaging arms; and claim 4 adds the inclined slot extending downwardly from the upper edge of the rod-engaging arms. None of these claims is enforceable today, and no IPR of them was ever filed, instituted, or decided — the structured record states this affirmatively and my searches corroborate it.

Estoppel landscape: there is none, and that cuts in the defendant's favor only in a trivial sense. Because no IPR or PGR was ever filed, no petitioner is barred under 35 U.S.C. § 315(e)(2), and no path-2 estoppel exists either. But estoppel is irrelevant: every prior-art ground a defendant could want (the 1920s–1940s window-fixture patents listed as "Similar Documents," including US2195979, US1951115, US2175761, US1810146, and US1594268) remains fully available — not because a petitioner preserved it, but because there is no live infringement theory to defend against in the first place. The § 286 six-year damages lookback means any accrual ended on or about 1968 at the very latest.

Pattern signals: none of the ordinary PTAB patterns are present, and their absence is structural rather than suspicious. No serial petitioner, because no rational petitioner exists. No aggressive patent-owner appeal campaign to the Federal Circuit, because there were no Board decisions to appeal. No defensive aggregator (Unified Patents, RPX, or similar) in the chain — defensive aggregators file against asserted patents, and this patent has been off the assertion market since 1962. The "Assignee: Individual / Original Assignee: Individual" entry and the 1962 lapse mean there is likely no successor-in-interest actively licensing this patent at all; if a demand letter does surface, treat it as a dead-patent assertion scheme rather than a genuine licensing program.

Recommended next steps

• No PTAB milestones to track. There is no institution deadline, no oral hearing, and no statutory one-year FWD date, because no petition was ever filed. The "PTAB proceedings on file" block is the canonical answer and it is empty. Verify for yourself at USPTO PTAB E2E (search application 514,681 / patent 2,374,165) and at the USPTO Open Data Portal; a CourtListener docket/keyword search for "2374165" returns nothing relevant.
• If a demand letter asserts US 2,374,165: do not build an IPR budget. Build a one-page response citing the printed expiration date of 1962-04-24 (17 years from the 1945-04-24 grant, under the pre-URAA term that governed a 1943-filed application), the four-year § 286 bar analysis, and the unavailability of injunctive relief. Put the sender on notice under 35 U.S.C. § 285 and Rule 11, and consider whether the letter violates your state's patent-assertion / bad-faith-demand statute. The authoritative document is at Google Patents: US2374165A.
• If someone instead means a different "2374165" — the Lumileds EP 2374165 LED assembly, Kenney's US 5,564,666, or Kelvin Roddy's US 9,872,580 — confirm the number before any analysis. Those are live-target candidates with real PTAB potential; US 2,374,165 is not. I have no information indicating any of the four citing patents has itself been through an AIA trial, and I am not asserting one way or the other.

Confidence and caveats: high confidence in the zero-count finding and in the expiration date, both grounded in the authoritative full text and the structured ODP block. I found no evidence of any PTAB proceeding, FWD, or Federal Circuit appeal, and I have not invented any proceeding number or panel. Local rule for this analysis: where web results and the structured data conflicted, the structured data controls — here they do not conflict.

I'll verify the assignment record for US 2,374,165 against the USPTO Assignment Center and related sources.

Ownership & Assignment Reconstruction — US 2,374,165

Analysis note on completeness: My prior section stated there was "no subsequent assignment/reassignment of record" for this patent. That conclusion stands, but it needs a sharper caveat that I flag here rather than treat as a contradiction: the USPTO's electronic assignment database only covers records from August 1980 forward, and MPEP 301.01 confirms pre-1980 records are kept in a separate historical database that is not exposed through the online Assignment Center. Because this patent expired in 1962, any transfer that ever existed would fall outside the searchable window. So the accurate statement is: no assignments are of record in the searchable system, not "no assignments were ever made."

Inventors

• Single named inventor, no joint inventors. Sole-inventor filings are the norm for small hardware items of this era and are not, by themselves, a flag.
• Employer is not stated anywhere on the face of the patent, no assignee is identified in the specification, and no corporate name appears in the front-page data. The OCR header ("Artie Barbee, Pontiac, Mich. Application December 17, 1943, Serial No. 514,681, 4 Claims") contains no "(Assignee)" line, which for 1940s practice is the standard tell that the patent issued to the inventor personally.
• Unusual-pattern check — not present. The "all inventors departed the original assignee within 12 months of filing" pattern requires an original assignee to depart from. There was none. No employment relationship, no co-inventor group, and no post-filing transfer is visible.
• Name-spelling variance (Arrie/Artie/A. Barbee) is a typographic/OCR artifact, not evidence of multiple individuals. Note also that the OCR of the specification header renders the patent number as "2,374,155"; the correct number is 2,374,165.

Original assignee

• None as a legal entity. Google Patents lists Original Assignee: Individual and Current Assignee: Individual — "Individual" is a Google Patents placeholder for "no assignee of record," not a company name. The patent issued to Arrie Barbee, an individual.
• Product embodying the claims: There is no evidence that Barbee, or any company acting as his assignee, manufactured or sold the claimed bracket assembly. I found no trade-catalog, corporate-registry, trademark, or news record tying a Barbee enterprise in Pontiac, Michigan to curtain/drapery hardware. I cannot confirm or rule out a small local manufacturing operation — this is genuinely unknown, and I will not infer one from the patent's existence.
• Primary line of business / current status: Not determinable from public record. Given a 1943 individual filing by a sole inventor in Pontiac, Michigan, the most likely profile is a small independent or job-shop enterprise, but that is an inference, not a finding.

Assignment timeline

There are no assignment records for US 2,374,165 in the USPTO Assignment Center (https://assignmentcenter.uspto.gov/) and no post-issuance legal events on Google Patents other than expiry.

Specifics:

• Searchable window: USPTO Assignment Center and its predecessors (Patent Assignment Search; Assignments on the Web) contain all recorded patent assignment information back to August 1980. Source: USPTO Assignment Database webinar deck, https://www.uspto.gov/sites/default/files/documents/Assignment%20Database%20Webinar_20150120.pdf; see also the bulk dataset "Patent Assignment XML (1980–Present)," https://data.commerce.gov/patent-assignment-xml-1980-present (temporal coverage 1980-08-01 onward).
• MPEP 301.01: "The historical database of assignments is maintained separate and apart from the database of assignments affecting title recorded since 1980." Pre-1980 records require direct contact with the Assignment Recordation Branch or a PTRC.
• Google Patents legal events (https://patents.google.com/patent/US2374165/en) list exactly four events, none of which is an assignment: 1943-12-17 filed by Individual; 1943-12-17 priority to US514681A; 1945-04-24 application granted; 1945-04-24 publication; 1962-04-24 anticipated expiration. Status: Expired – Lifetime.
• Consequence: Since the patent expired 1962-04-24, any assignment of it would necessarily have been recorded before the electronic database begins. There is therefore zero prospect of an Assignment Center hit showing an NPE-stage transfer — the 1962 expiration predates the entire NPE era by three decades.

No reel/frame entries, assignors, assignees, execution dates, recording dates, or correspondents of record exist to report. Per the task instruction, I am stopping the assignment-by-assignment reconstruction here, because there is nothing to reconstruct.

Verification path if you need certainty: a paper-record search of the pre-1980 Assignment Recordation Branch historical index. Given the 1962 expiry, I would not expect it to show anything beyond, at most, a single inventor-to-company assignment, and it cannot change the patent's unenforceability today.

Timeline diagram

timeline
    title Ownership of US 2374165
    1943 : Application filed by Arrie Barbee
         : No assignee named at filing
    1945 : Patent issued to Arrie Barbee
         : No assignee on the printed face
    1962 : Patent expired
    1980 : USPTO electronic assignment records begin
    2026 : No assignments found in searchable data

Deviation from the template flagged: the remaining sections below are provided in abbreviated form because the output contract requires them. Every signal resolves the same way — the absence of records is structural, not evidentiary, so no signal can be scored as present on this record.

NPE / troll-pattern signals

Verdict

Insufficient data.

Justification: The patent issued in 1945 to a sole individual inventor with no assignee on the printed face (Google Patents: Original Assignee — Individual, https://patents.google.com/patent/US2374165/en), and the USPTO Assignment Center contains no records for it. That absence is not evidence of a clean chain of title — it is an artifact of the database boundary: the Assignment Center carries records only back to August 1980 (USPTO Assignment Database webinar deck, https://www.uspto.gov/sites/default/files/documents/Assignment%20Database%20Webinar_20150120.pdf; bulk dataset coverage 1980-08-01–present), while this patent expired 1962-04-24, so any transfer that ever occurred was recorded in the pre-1980 historical index and is invisible to online search. With zero reel/frame entries, zero correspondents, and zero litigation, no NPE signal can be affirmatively scored, and I decline to characterize a 1943-era sole-inventor hardware patent as an NPE asset on naming or era-based inference alone.

Verification links:

• USPTO Assignment Center: https://assignmentcenter.uspto.gov/ (search patent number 2374165)
• Legacy portal: https://assignment.uspto.gov/patent/index.html
• Google Patents legal events: https://patents.google.com/patent/US2374165/en

I'll verify the USPTO record and trace each citation for US 2,374,165.

1. USPTO record check for the exact number 2374165

Searching the literal string 2374165 returns exactly one US patent: US 2,374,165 A, "Combination curtain, drape, and shade holder," Artie/Arrie Barbee, application 514,681, filed 1943‑12‑17, granted 1945‑04‑24. No other US grant carries that number. The seven‑digit collisions catalogued in the earlier section (RU2374165C1, FR2374165A1, EP2374165A1, CA2374165, ES2374165T3, and the Brazilian STJ docket) are other‑jurisdiction or non‑patent documents and are excluded here per your instruction.

Critical limitation on this task: the full text I am working from (Google Patents, https://patents.google.com/patent/US2374165/en) shows the "Cited By" block and a "Similar Documents" block — but no examiner‑cited "References Cited" / backward‑citation block at all. I could not pull the USPTO Patent Public Search backend or PatentCenter file wrapper directly in this session, so I cannot rule out that the original 1943–45 file wrapper cites art that the Google front‑end simply does not surface. Everything below is therefore divided into (a) what the fetched record actually contains and (b) prior‑art candidates drawn from its algorithmic "Similar Documents" list. Do not treat (b) as "the citations for 2374165" — they are art‑adjacent references, not Of Record citations.

2. What the citation record for US 2,374,165 actually contains

Statutory frame. Because the application was filed 1943‑12‑17, pre‑AIA §102 governs. The critical date is the filing date (presumptive constructive reduction to practice), December 17, 1943. Only art patented or described in a printed publication before that date (pre‑AIA §102(a)/(b)) can anticipate. In this record, therefore:

• US2459503 (Bracket, 1949‑01‑18), US2569063 (Multipurpose bracket, 1951‑09‑25), and US2402507 (Curtain rod or fixture, 1946‑06‑18) appear in the Similar Documents list but post‑date the filing and are excluded on the same basis as the four forward citations.

3. Candidate prior art predating 17 Dec 1943, with claim mapping

The pre‑1943 entries in the record's Similar Documents list, ranked by probative value. Dates are as listed on the fetched record.

A. US 1,595,268 — "Combination curtain, drapery, and shade support" (pub. 1926‑07‑27)

Most topically on point — the title is the identical three‑function combination claimed here.

• Status: UNVERIFIED. I could not retrieve its specification, claims, or drawing. I will not characterize its disclosure. It should be pulled from Patent Public Search / PatentCenter before any anticipation position is taken.
• Potential §102 target: If it discloses a casing bracket carrying both a shade‑roller mount and two rod supports, it is the single most dangerous reference to claims 1, 3, and 4. Until read, treat as a priority retrieval, not as an established reference.

B. US 1,375,805 — Henry Umphrey, "Shade and curtain holder," filed 1920‑10‑14 (Ser. 416,912), granted 1921‑04‑26

Closest verified structural reference to claim 2.

• Disclosure: A supporting bar with an outer curtain rod and an inner curtain rod supported in parallel relation; the rod is a channel/trough section with inturned upper and lower flanges; a supporting member has an upturned projection that extends beneath the upper flange of the rod and a lower projection bearing on the outer side of the lower flange; keyhole slots in the outer rod with supporting pins on the bar entering the slots; telescopic rod sections; ends detachable so curtains can be removed separately from the blind and the whole device removed as a unit.
• Claim mapping:
  • Claim 2 (channel member open along its upper edge receiving a bracket arm; notch in the arm's upper edge; pin bridging the channel engaging the notch): Umphrey discloses the channel‑section rod received on a support projection, and a pin‑and‑slot (keyhole) retention. The two limitations that do not map cleanly are (i) the pin being carried transversely of the channel to bridge its sides (Umphrey puts the pins on the bar, the slots in the rod — the inverse arrangement) and (ii) the "notch in the upper edge of the arm." Expect a §103 position, not a clean §102 anticipation.
  • Claims 1/3/4: Umphrey teaches plural parallel rods detachably supported on one mounting bar, which is the function these claims claim, but it lacks the nested pair of U‑shaped brackets mounted on the shade‑roller bracket's upstanding arm. No anticipation.

C. US 1,570,747 — Ralph Jewett, "Combination shade and curtain holder," filed 1924‑09‑04 (Ser. 735,731), granted 1926‑01‑26

Best verified reference on the "one plate carries both a shade bracket and a detachable drapery bracket" concept of claim 1.

• Disclosure: Plates 10 secured to the window frame by Z‑shaped brackets 18/20 with adjusting screws 23 for width adjustment; laterally extending enlargements 13 with outturned arms 14 engaged by the hollow arms 15 of a drapery bracket 16 that is "exchangeably and removably held"; near the lower ends, shade‑roller brackets 25/26 (one perforated 27 for the pintle, one with the customary open curved slot 28). A modification (Fig. 4) hooks the plate over a cornice.
• Claim mapping:
  • Claim 1 (bracket member with apertured attaching flange + lateral flange merging into an upright arm; a substantially U‑shaped bracket whose arm contacts the upright arm on one side and whose other arm is parallel and rod‑engaging): Jewett teaches a frame‑mounted plate presenting a lateral arm engaged by a separable drapery bracket — the same separate‑rod‑bracket‑on‑a-casing‑plate architecture. But the engagement is hollow‑arm‑over‑outturned‑arm, and bracket 16 is not shown as U‑shaped with a second arm parallel to the plate arm. Gap on at least one limitation → no §102 anticipation; §103 candidate.
  • Claims 3/4: No nested pair of U‑shaped brackets on an upstanding arm, and no inclined slot receiving a pin‑carrying channel rod. No anticipation.

D. US 2,175,761 — John H. Quinlan, "Window shade and curtain holder," filed 1939‑02‑02 (Ser. 254,298), pub. 1939‑10‑10 (A47H2/00; 160/19, 160/108)

Same art unit / same problem; structurally remote.

• Disclosure: A one‑piece sheet‑metal box, open at top and back, with end walls carrying a slot 23 for the rectangular trunnion and an opening 26 for the cylindrical trunnion of the roller; bottom wall with an opening 28 through which the shade passes and parallel longitudinal slots 29 receiving the hemmed upper edges of the curtains (no pins or connectors); tabs 19/hooks 22 close the unit.
• Claim mapping: Anticipates nothing in claims 1–4. It has no U‑shaped rod bracket, no rod arm, no channel member, no pin/notch. Its only value is cumulative — it shows that integrating shade and curtain support in a single casing‑mounted unit was old by 1939, which is §103 background, not §102 art.

E. Remaining pre‑1943 Similar Documents (cumulative; not individually probative)

4. Bottom line on anticipation

No reference of record anticipates any of claims 1–4. Applying the anticipation standard — a single reference disclosing every limitation, arranged as in the claim — the record fails on every claim:

The defensible position is that claims 3 and 4 (the nested dual‑U‑bracket sub‑assembly on the shade‑roller bracket's upstanding arm) are the point of novelty and the least exposed; claim 2 is the most exposed because its channel‑rod‑on‑support‑arm concept was well developed by 1921 (Umphrey) and its pin retention was a familiar expedient; claim 1 sits in between, and its truncated OCR text (the fetch cuts off at "…and a second sub—") means the closing limitation must be read off the printed patent before any mapping is treated as complete.

5. Caveats and next steps

1. "Cited By" ≠ prior art. The four forward citations (US2738154, US5564666, US7252201, US9872580) must not be offered as §102 art; they post‑date the filing. If a downstream reviewer has treated them as anticipatory, that is an error and should be flagged.
2. US1594268 is the stated gap. It is the topically identical reference and the one I could not read. It must be retrieved before this analysis is considered complete; it is the only listed document that could realistically carry a §102 case against claims 1, 3, or 4.
3. Similar Documents are algorithmic, not legal citations. Google's similarity list is a text‑similarity artifact; it is not the examiner's citation record. If you need the actual 1945 file wrapper citations, order the PatentCenter "References Cited" or the printed patent's front page.
4. OCR integrity. The fetched text mangles 1/7 and I/l throughout ("bracket I2" for 12, "arm 2d" for 24, "mer ing" for merging). Any claim chart built on the fetch's claim text should be re‑verified against the USPTO PDF, as noted in the earlier sections.
5. No contradiction between this section and the earlier ones — both independently conclude that US 2,374,165 has no backward citations listed and no litigation history, and that its 1962 expiration makes the §102 exercise historical rather than enforcement‑oriented.

I'll ground the obviousness analysis in the prior-art references listed on the record before reasoning about combinations.

Let me pull the disclosures of the closest structurally-related references on the record.

Obviousness Analysis — US 2,374,165 (35 U.S.C. § 103)

1. Two threshold corrections before the merits

(a) "§ 103" is an anachronism for this patent, and that cuts in the patentee's favor.
US 2,374,165 was filed December 17, 1943 and granted April 24, 1945. Section 103 was added by the Act of July 19, 1952, effective January 1, 1953. At the time of grant, patentability of a combination was governed by the pre-1952 "invention" requirement (R.S. § 4886) as construed in Hotchkiss v. Greenwood (1851) and, decisively for that era, Cuno Engineering Corp. v. Automatic Devices Corp., 314 U.S. 84 (1941), which demanded a "flash of creative genius." The search results surfaced a decision quoting Cuno in exactly these terms — "This hardly seems to reveal a 'flash of creative genius'… the most that can be said is that the idea required ingenuity, 'but no more than that to be expected of a mechanic skilled in the art'" (https://storage.courtlistener.com/harvard_pdf/[6986035](/patent/6986035).pdf). A modern § 103 analysis of this patent is therefore a restatement of the old "invention" standard, and the reasoning below should be understood as showing that the claims would fail even under the pre-KSR, patentee-friendly formulation. If the same facts were run under a strict Cuno standard, claim 1 would have a materially better chance of surviving than under KSR.

(b) The "Prior Art" block on this page is not an examiner citation list.

• Backward citations: none shown. The record lists no examiner-cited patent references. Nothing on the page establishes that any of the documents below was considered during prosecution.
• "Cited By" (4 documents) is forward-citation data and is not prior art. US 2,738,154 (priority 1952‑08‑12), US 5,564,666 (1994), US 7,252,201 (2004) and US 9,872,580 (2017) all post-date the 1943 filing. They may be used at most for claim-construction context (e.g., what "channel-type curtain rod" meant to the art), never as § 102/§ 103 art.
• "Similar Documents" is a machine-similarity ranking, not an art-of-record list. Every entry must be independently date-checked and content-verified, and three entries post-date the filing and must be excluded (see § 2).
• The page's "Prior art keywords" (bracket, arm, drape, curtain, arms) are algorithmically extracted from the text. They are not evidence of anything.

2. Prior-art candidate inventory (from the page's reference lists)

Available as prior art (published on or before 1943‑12‑17):

Must be excluded as prior art (post-date the 1943 filing): US 2,402,507 (1946), US 2,459,503 (1949), US 2,569,063 (1951) — all appearing in the "Similar Documents" list — plus all four "Cited By" documents. US 2,459,503 is worth an explicit note: if further investigation showed an effective filing date before December 17, 1943 it could qualify under pre-AIA § 102(e), but the page gives only a 1949 publication date and I will not assume an earlier date.

Supplementary (found in searching, not on the page's lists): US 2,140,080 (Johnson, "Combined curtain and shade," 1938‑12‑13 — shade brackets 10 and separate curtain brackets 13 on one window head, with rod 21 supported between brackets); US D101,104 (Bushey, design for a "Combined window shade, curtain and drapery support," filed 1936‑07‑28); US 4,684,095 (Athey, 1987 — post-dates the patent; usable only as evidence of what the art later called "conventional," which is weak, retrospective evidence).

Date discrepancy flagged: the present instruction states the current date as April 26, 2026, while the authoritative full-text fetch is timestamped 2026‑09‑27 and the previously generated sections state today is 2026‑09‑27. I have treated the analysis as date-neutral, since the patent expired in 1962 under either date.

3. Verified reference disclosures that matter

• Jewett, US 1,570,747 — a pair of plates 10 with upper and lower angular perforated extensions 11/12 bearing on the window frame; near their lower ends the plates carry "the well known supporting brackets 25 and 26, one of which is perforated as at 27 for the reception of the pintle at the end of a shade or curtain roller, while the other has the customary open and curved slot 28." The plates' outer edges have enlargements 13 "angularly bent to form arms 14 adapted to engage in the hollow arms 15 of a drapery bracket 16 which is exchangeably and removably held thereby." Object stated: attachable "without the assistance of skilled help or the use of special tools," with the drapery bracket "readily and conveniently removed … without … disturbing the other parts of the device."
• Ziolkowski, US 2,195,979 — fixture 10 = flat plate 11 with flanges 12 extending from its upper and lower edges; on pins 13 "pivotally mounted between the flanges 12… a short arm 14" bent at 15 with end 16 at right angles, the arm's metal being bent to form retaining members 17. Critically: "For the double type support, the fixtures 10 are provided with flanges 12 of sufficient width to accommodate two pivot pins 13." And: "The invention may be embodied in single or multiple type supports, but in the drawings I have shown the double type, suitable for supporting glass curtains and draperies."
• Quinlan, US 2,175,761 — a single-piece sheet-metal holder, box-like, open at top and rear, with end walls 14 having rear extensions 16 "provided with perforations 17 to secure securing screws 18"; slot 23 and opening 26 receive the shade-roller trunnions; bottom wall provided with slots for curtain hems. Object: a simplified device that supports a shade and curtains.

These three alone establish that, as of 1943, the art had already combined (i) an apertured mounting flange, (ii) a shade-roller support, (iii) a curtain/drapery rod support, and (iv) two laterally spaced rod supports on a single fixture — the last from Ziolkowski's "double type."

4. Grounds of rejection

Ground 1 — Claim 1: Jewett in view of Ziolkowski, further in view of Quinlan

• "bracket member having at one edge thereof an apertured attaching flange" and "at its upper edge … a laterally extending flange merging into a vertically disposed arm" → Jewett's plate 10 with perforated extensions 11/12 and outturned arms 14; Quinlan's perforated extensions 16 on end walls 14 (an apertured flange at one edge of a shade-roller-supporting element).
• "a substantially U-shaped bracket having an arm contacting the first-named arm at one side" and "a second arm in parallelism to the first-named arm and provided to be engaged by one end of a curtain rod" → Ziolkowski's arm 14 pivotally carried on the fixture and bent at 15/16 to present a rod-carrying portion; Jewett's detachable drapery bracket 16 whose hollow arms 15 engage the plate arms 14.
• "and a second sub-bracket" (the truncated limitation; contextually bracket 17) → Ziolkowski's disclosure that flange 12 accommodates two pivot pins 13 and carries a pair of arms.

Motivation: same field, same problem, and expressly the same benefit. Jewett's stated object (attach without skilled help; remove the drapery bracket without disturbing the rest) is precisely the advantage Barbee claims. Ziolkowski's stated object is "a pair of cooperating supporting members … separately adjustable" for "glass curtains and draperies." Combining a shade-roller plate (Jewett/Quinlan) with a two-arm, two-rod fixture (Ziolkowski) is the combination the art was already assembled to produce; the classification itself, A47H1/13 — "Brackets or adjustable mountings for both roller blinds and drawable curtains," is a class defined by the combination.

Ground 2 — Claim 3: same three references; the claim adds nothing beyond aggregation

Claim 3 requires (a) a shade-roller bracket with casing-mounting means at one vertical edge (Jewett 25/26; Quinlan slot 23/opening 26 and screw extensions 16), (b) a lateral top flange merging into an upstanding arm, (c) "a pair of U-shaped bracket members each having one arm thereof secured to each other and adapted for supporting on the first-named arm," and (d) second arms "laterally spaced from one another," each receiving a curtain-rod end. Elements (c)–(d) read directly onto Ziolkowski's double-type fixture: two arms on one flange, laterally spaced, one supporting the outer (drapery) bar and one the inner (glass-curtain) bar. The only meaningful difference is Barbee's specific joining of the two bracket arms by web 22 and rivets 19 — a duplication of parts with a predictable joining expedient. Under KSR ("a court must ask whether the improvement is more than the predictable use of prior art elements according to their established functions"; "the combination of familiar elements according to known methods is likely to be obvious when it does no more than yield predictable results") this is not patentable. Under pre-1952 law it is likewise "mere mechanical skill."

Ground 3 — Claim 4: Ground 2 plus a channel-rod-with-slot engagement

Claim 4 adds "an inclined slot extending downwardly from their upper edges" on the rod-supporting arms, receiving "channel-shaped curtain rods having transverse pins seated in the slots."

• The inclined top-edge slot on a bracket arm to capture a rod pin is the classic bracket geometry of this period. On the record, the best title-level candidates are US 1,606,582 ("Curtain-rod end member with interior sheaves") and US 1,405,958 ("Extensible bracket for window-drapery rods"); both are on the page's list and both post-date-eligible, but I have not verified their disclosures.
• Claim 2 — which is the rod-side counterpart — is the cleaner target: "a channel member open along its upper edge," the channel receiving the bracket arm, the arm having an upper-edge notch, and "a pin bridging the space between the sides of said channel member" engaging the notch. This is a pin-and-notch detachable coupling. US 1,606,582's rod-end member with interior members bridging the rod's sides is the closest structural analogue by title, and the "channel type" rod was itself a stock commercial article by the 1930s–40s.
• Honest caveat: the only document I actually retrieved that describes the channel-rod-to-bracket attachment in detail is Athey, US 4,684,095 (1987), which states: "The upper wall of the curtain rod 35 has an opening through which the hook 33 extends and the curtain rod is tilted … until the curtain rod is horizontal. In this position, the curtain rod is thoroughly locked to the curtain rod holders. This method of securing such a curtain rod to curtain rod holders is conventional." That is post-dated and is not § 102 art; it is at most weak, retrospective evidence of conventionality and should not be relied on alone. A defensible claim 2/claim 4 rejection requires pulling the 1920s–30s rod-end references.

Ground 4 — Claim 2 as an independent claim (if it is independent)

If the OCR is read literally, claim 2 is a free-standing claim to the rod, not the assembly. Even so, it fails: a channel member + a bridging pin + a notched mating bracket arm is individually old hardware and its combination performs no function beyond the sum of parts (an aggregation, not a true combination). The specification itself offers no unexpected result — the stated purpose is that "the pins … are received in the slots … to retain the rods in position," i.e., straightforward detachable retention.

5. Consolidated motivation-to-combine (what a POSITA would have had reason to do)

1. Identical field and problem. All references are window-casing fittings in A47H; the prior art patents (Jewett, Quinlan, Ziolkowski, and by title US 1,594,268, US 1,581,313, US 1,375,805, US 1,570,747) share Barbee's exact stated object: support a shade and curtains/drapes from a single mounting.
2. Express prior-art teaching of the two-rod, one-fixture arrangement. Ziolkowski: "the double type, suitable for supporting glass curtains and draperies" with two pivot pins on one flange. No teaching away exists in any retrieved reference.
3. Express prior-art teaching of detachability. Jewett: drapery bracket "exchangeably and removably held," "removed … without disturbing the other parts." Barbee's pin-in-slot adapters (25/26/26′) solve the same problem — a POSITA would have been led directly to a detachable rod-to-bracket coupling.
4. A recognized design constraint supplies the "lateral spacing." Drapes are hung on a rod set farther from the wall/casing than glass curtains. That spacing requirement is what motivates two arms of different depth on one fixture — exactly the "laterally spaced" limitation of claims 3 and 4 and the between-arms placement of arm 20 in the specification.
5. All elements perform their own established function with no change in operation. The flange mounts, the U-bracket arms carry rods, the slot-and-pin retains. The result is a predictable aggregation; Barbee's only asserted advantages (convenient mounting; independent removal) are the same advantages the prior references already claimed.
6. No secondary considerations of record. No assignee, no recorded assignment, no litigation, no forward family, no licensing, no evidence of commercial success, copying, long-felt need, or failure of others. With no nexus evidence, there is nothing to rebut the prima facie case.

6. Counterarguments the patentee could raise (and their weaknesses)

• "Specific nested geometry." The nesting of smaller U-bracket 17 inside larger U-bracket 12 with a shared rivet connection through arms 11/13/18 and web 22 could be argued to be an unusual arrangement rather than a mere duplication. Weakness: it is a two-slot, two-arm arrangement that Ziolkowski's "flanges … to accommodate two pivot pins" anticipates in function; and Barbee's own specification gives no unexpected performance benefit.
• "The prior art is remote." Not sustainable: US 2,175,761 and US 2,195,979 are 1939 and 1940 references in the identical classification.
• Pre-1952 generosity. As noted in § 1, under Cuno/Mandel Bros. a 1945 court might have found "invention" in the particular assembly. This is the strongest available defense and it is a legal-standard defense, not a technical one.

7. What must be verified before relying on this analysis

1. Claim 1 is truncated in the source ("…and a second sub—"). The full closing limitation must be read from the USPTO Patent Public Search / PatentCenter PDF; the analysis of claims 1 and 3 turns partly on it.
2. Claim 2's dependency is an inference from the fragmentary OCR; confirm.
3. Reference contents not yet verified: US 1,581,313; US 1,594,268; US 1,606,582; US 1,405,958; US 1,951,115; US 2,225,281 (Speranza). Claim 2 and claim 4 cannot be finally rejected without at least two of these pulled in full. (Speranza, US 2,225,281, was cited against a 1986 application in class 248/253 in US 4,684,095's reference list, suggesting it is directly on point for a combined curtain-rod/shade holder — worth retrieving first.)
4. Priority/reduction-to-practice evidence. References published between December 17, 1942 and December 17, 1943 are only § 102(a) art; anything published on or before December 17, 1942 is a § 102(b) bar.
5. The numeral-collision warning from the earlier sections applies to prior-art searching too. Searching "2374165" returns RU 2374165 C1, FR 2374165 A1, EP 2374165 A1, CA 2374165, ES 2374165 T3 and a Brazilian STJ docket — none related. Prior-art queries must be run by reference number (e.g., "US1570747"), never by the subject patent's number.

8. Bottom line

• Claims 3 and 4 are the strongest targets. US 2,195,979 (Ziolkowski) in view of US 2,175,761 (Quinlan) in view of US 1,570,747 (Jewett) renders claim 3 obvious on a straightforward element-by-element basis; the "pair of U-shaped brackets with laterally spaced second arms" is Ziolkowski's disclosed double-type fixture.
• Claim 1 is likely obvious on the same three references once the truncated "second sub-bracket" limitation is confirmed, because that limitation is supplied by Ziolkowski's two-pin flange.
• Claim 2 and the inclined-slot limitation of claim 4 are probable but unproven on this record. They turn on US 1,606,582 and US 1,405,958 (or an equivalent channel-rod structure), which I could not retrieve and whose disclosures I will not guess at. Claim 2 in particular may be vulnerable to a simple "aggregation of old elements" attack independent of any specific reference.
• Caveat on the legal standard: the § 103 framing is anachronistic for a 1943 filing. The technically correct framing is the pre-1952 "invention" requirement, which was more forgiving at the time of grant (Cuno) and less forgiving after the 1952 Act and KSR. That difference — not any gap in the prior art — is the patentee's best remaining argument.