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[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 398
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H. MIKOREY. TALKING MACHINE. APPLICATION PILED JAN. 16, 1912, Patented May 21, 1912. 1,027,350. 3 SHEETS-SHEET 2, … j'/^.r. I'^^J. /^ 23 J3^ ^^ J'/^.d, A..0 COLUMBIA PLANOORAPH CO., WASHINGTON, D. C.Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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