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[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 764
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No. 691,000. Patented Jan. 14, 1902. A. B. ROBINSON. PHONOGRAPH APPARATUS. (Application filed Jan. 14, 1001.) (No Model.) 2 Sheets— Sheet 2. Jti^.4 V^v\AyQA^Xoz ^H ^ RIS PETERS CO. PHOTO-LITHO..'WASH1N&TON. DC.Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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