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[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 193
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Attorneys HE NORRfS PETERS CO.. PHOTO-UTHO WASHINGTON. D. C, J. H. PEARSON. PHONOGRAPH ATTACHMENT FOR CLOCKS. APPLICATION TILED APE. 24, 1913. 1,131,001. diZjr^ Patented Mar. 9,1915. 2 SHEETS-SHEET 2. ■f?S4MA*m/#£ … J%.z.Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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