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[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 282
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F. L. DYER. PHONOGRAPH OR TALKING MACHINE. APPLICATION FILED FEB. 21, 1910. 1,194,488, Patented Aug. 15, 1916. 2 SHEETS-SHEET 2. rC J&0-3 r/£/////////////////////////////////////////////^^^ … J/i&e/itor:Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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