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[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 1079
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25- TMK KQMtIS P€T£RS CC, WASHINGTON. P. C. No. 857,209. PATENTED JUNE 13, 1907.W. C. SMITH.SOUND PRODUCING DEVICE. APPLICATION FILED OCT.5. 1906. 2 8HEET8-8HEET 2.Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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