Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 460
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WITNESSES INVENTORATTORNEY.S/ (No Model.) 3 Sheets—Sheet 2. A. K. KELLER. MACHINE OE ATTACHMENT FOR OPERATINa PHONOORAPHS. No. 518,192. Patented Apr. 10, 1894. (^1hi WITNESSES: ^ … INVENTORBY^^^TORNEY^. (No Model.) 3 Sheets—Sheet 3. A. K. KELLER. MACHINE OR ATTACHMENT FOR OPERATINQ PHONOGRAPHS. No. 518,192. Patented Apr. 10, 1894.Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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