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[Graphophone patents] (1878)

United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 766

An illustration from [Graphophone patents], 1878, leaf 766
J. F. OTT. PHONOGRAPH. APPLICATION FILED APE. 15, 1908. Patented Oct. 5, 1909. 936,272. fS>~Y … Mnewes: UOM* 9 uuu« CO »«j'C-i"-M«»»»<*»» MASmOTOo 0 C

Phonograph · Patents

Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.

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