Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 795
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( COLUMBIA PLANOOHAPH CO.. W,\SI 1 T. A. EDISON. PHONOGRAPHIC RECORDING APPARATUS. APPLICATION FILED JAN. 21, 1910. 1,152,614. Patented Sept. 7,1915. 2 SHEETS—SHEET 2. JZP-? JZ ^////M^////M//////W//7^. J $7777, JJ … Zw^Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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