Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 482
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INVENTOR (No Model.) No. 519,614, 5 Sheets—Sheet 3. S. D. McKELVEY. PHONOGRAPH. Patented May 8, 1894. Ai 40 I Aj( .40 … flB.-^Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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