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[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 120
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THE rtOBRlS MTERS CO., PHOTO-LJTHO., 5^ \ i (No Model.) No. 474.946, L. S. CLARKE. PHONOGRAPH. 4 Sheets—Sheet 4. Patented May 17, 1892. … 1- JUjk^Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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