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[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 32
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M. ADAIR. PHONOGRAPH STOP. APPLICATION FILED JULY 30, 1915. Patented July 4, 1916. 1,189,222. 3 SHEETS-SHEET I. … X I?Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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