Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 356
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No Model.) . 3 JSheets—Sbeet 3. C. A. RANDALL. APPARATUS FOR RECORDING AND REPRODUCING ARTICULATE SPEECH. ..No. 502,383, Patented Aug. 1, 1893,Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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