Plaintiff
1 case as plaintiff.
Cinaudagraph Corporation (commonly “Cinaudagraph”; later marketed as Cinaudagraph Speakers, Inc. and Aireon Cinaudagraph Speakers, Inc.) was a US loudspeaker manufacturer headquartered at 2 Selleck St., Stamford, Connecticut. It was founded in 1934 by industrialist John Sherman Hoyt, who remained president until 1940, and built its Stamford factory around 1936. It was privately held; one trade-history source (Radiomuseum) records a workforce of roughly 30 employees, about four engineers and one chemist in the 1930s. No reliable revenue figures are available, and the business no longer exists.
Operations. Cinaudagraph designed and built loudspeakers and related electroacoustic components — permanent-magnet and electrodynamic drivers from roughly 2-inch units for table radios to very large full-range drivers for public-address and theater use, sold under lines such as the “Magic Magnet” speaker (using its “Nipermag” magnet alloy and polyfibrous cones). Chief engineer Lionel B. Cornwell led driver design, and Rudy Bozak worked at the firm before founding Bozak. Its best-known installation was the large multi-driver PA system at the 1939 New York World’s Fair. Patent records (GoodIP) list about 17 Cinaudagraph-assigned applications, mainly Cornwell loudspeaker improvements (e.g., US 2,186,576; US 2,207,240).
Litigation posture. The database shows one case, with the company as plaintiff and none as defendant: Cinaudagraph Corporation v. Lionel B. Cornwell, Supreme Court of Connecticut (1942). That was a state-court contract-reformation action over patent license and employment agreements, not a patent infringement suit, and it is not the profile of a non-practicing entity. The plaintiff/defendant counts here reflect a single historical commercial dispute, not a patent-assertion campaign, and there is no Texas-venue or NPE pattern.
Context. The 1942 opinion records that speaker manufacture ran at a loss and ceased in December 1939, when Cornwell was discharged, though Cinaudagraph-branded speakers continued to be sold by successor/licensee entities — United Teletone Corp. (1940) and Aireon Cinaudagraph Speakers of Chicago (1946) — making later branding and corporate attribution uncertain.
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Contract/reformation proceeding between Cinaudagraph Corporation and Lionel B. Cornwell over a royalty/license agreement covering Cornwell's loudspeaker patent; the Connecticut Supreme Court affirmed the trial court's reformation for Cinaudagraph. The narrative identifies it as not a patent infringement suit, and the opinion does not explicitly cite US Patent 2,200,490.