Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 60
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P. OATUOOI. PHONOGRAPH SOUND BOX. APPLICATION PILED MAR. 11, 1911. Patented Feb. 3, 1914. 1,085,848. … COLUMBIA PLANOGRAPH CO.. WASHINGTON. D. C.Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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