Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 171
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„CtW B <»»»« CO. PW^O.UT>«»«»£<R -.AW.-CTW. 0 C 949,939. J. H. MOUNT. TALKING MACHINE, APPLICATION FILED 1£AT 9, 1908. Patented Feb. 22,1910. 5 SHEETS-SHEET 4.Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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