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[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 869
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241- X 250 Wr 251 4Z7 262 / 27/4Z6 275273 S78 4 —v273 T%&.13. … 1,265,009. G. H. UNDERHILL. PHONOGRAPH. APPLICATION FILED APR. 29, 1911. Patented May 7,1918. 9 SHEETS-SHEET 6. FigiaPhonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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