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[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 577
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Inventor W. A. SHARP, ATTACHMENT FOR TALKING MACHINES.APPLICATION EILED KAt U. 1917. 1,259,916. Patented Mar. 19,1918. 2 SHEETS-SHEET 2. £,1 I J?3 .Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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