Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 312
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r-^- 11. … i PETERS CO , PMOTO-LITHO., WASHINOTOM, D- ( (No Model.) No. 499,879. rr, ^ ^ Sheets—Sheet 7. T. A. EDISON. PHONOaRAPH. PatentedJune 20, 1893. /Z^ \JR.Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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