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[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 740
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C. L. HIBBARD. PHONOGRAPH. APPLICATION FILED NOV. 22, 1907. 1,119,157. Patented Dec. 1, 1914. 5 SHEETS-SHEET 4. j?tg.& … u. Aj . <^» y^<_-^x„ ^/&, 'HE NOSSK PETERS CO.. PHOTO-LITHO . WASHINGTON. D. t .Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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