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[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 902
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No. 704,047. Patented July 8, 1902. E. R. JOHNSON. SOUND RECORDING AND REPRODUCING DEVICE. (Application filed Nov. 3, 1900. J (No Model.) ,>%^.:l. … : N0««l5 PETERS CO. PMOTO-LITHO., WASHINOTON. 0- C.Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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