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[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 63
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No. 12,442. REISSUED JAN. 30, 1906. G. H. VILLY.HORN FOR PHONOGRAPHS, EAR TRUMPETS, &c. APPLICATION TILED OCT. 26, 1905. 3 SHEETS-SHEET 3. … \\tttt essesPhonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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