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[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 860
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T. EYNON. PROCESS OF PRODUCING PHOTOGRAPHIC RECORDS. APPLICATION FILED AUG. 25, 1915. Patented Nov. 28, 1916. 1,206,684. 2 SHEETS-SHEET 2. Tf/zZZ … 7&&&: *?/?& 7^/Zr^ *>/ £0 -«?- &3 3lnliriitni \V\0 W\(Vb C \^Y\ 0 Y\ Ull M2Aa^^r- J\tttmuHi5Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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