Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 116
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E MORRIS PETERS CO., PHOTO-UTHO,, (No Model.) No. 474,946. 4 Sheets—Sheet 2. L. S, CLARKE. PHONOGRAPH. Patented May 17, 1892,Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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