Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 306
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THE NOfimS PETERS CO. PMOTO-LITHO.. WASHINQTtX. I (No Model.) 7 Sheets—Sheet 3. T. A. EDISON. PHONOGKAPH. Patented June 20, 1893. … ^r[AX2A^X0ZPhonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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