Prior art

Despite multiple attempts to retrieve the full text of US patent RE47720, including its claims and "References Cited" section, I have been unable to do so using the available search capabilities.

Here's what the search attempts revealed and the challenges encountered:

• Reissue Patent: The patent number RE47720 clearly indicates it is a reissue patent. Reissue patents are granted to correct errors in an original patent. While information about re-examination applications for RE47720 appeared in USPTO's Open Data Portal [cite: 4, 5 from previous step], the full granted reissue patent document itself, with its claims and "References Cited," could not be accessed.
• Search Limitations: Direct searches on Google Patents for "RE47720" resulted in a "Sorry, we couldn't find this patent number" message [cite: 1 from previous step]. Attempts to navigate USPTO's Patent Public Search (PPUBS) and Patent Center also did not yield the full document directly, even when following guidance on how to format searches for reissue patents (e.g., using leading zeros) [cite: 3, 7 from previous step]. Some USPTO links related to RE47720 showed "error loading documents" [cite: 4 from previous step].
• Missing Original Patent Number: A crucial piece of information for analyzing a reissue patent is the original patent number it reissued from. This would typically be included in the reissue patent's bibliographic data and could provide an alternative path to finding prior art. However, this information could not be found directly in the search results.

Without access to the complete patent document for RE47720, specifically its detailed claims and the "References Cited" section, it is not possible to perform the requested analysis. I cannot identify specific patent citations, their publication/filing dates, provide a brief description, or determine which claims of RE47720 they potentially anticipate under 35 U.S.C. § 102.