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[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 224
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P. B. DELANY. PHONOGRAPH. APPLICATION FILED SEPT. 12, 1912. Patented Aug. 1,1916. 1,198,242. /^ur.3. Fuj.L 771 FiaZ. … ^t^'J/Cu)^^^^ itk&yiQ OA, <A" <3r' /^J»_«rvAA^* y ■ HOftms I'Erenz ca..Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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