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[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 722
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THt HOBRlS PETCRS CO . rHOTO-LITMO.. WASM.NCTON, O. C (No Model.) No. 569,290. 3 Sheets—Sheet 2. T. H. MiCDONALD. GRAPHOPHONE. Patented Oct. 13, 1896.Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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