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U.S. patents issued to Thomas A. Edison from 1883-88 (1900)
United States. Patent Office, Edison, Thomas A. (Thomas Alva), 1847-1931 · [Washington, D.C.] : The Office · leaf 534
(No Model.) ^ ^ EDISON & S. BERaMANN. TELEPHONE. No. 337,254. Patented Mar. 2, 1886. … lElfff. 3. INVENTORS: -ATTESTi ^^^^LCc^ N MTtm F»w«»l*«r«pM» W«i**»i**^llPatents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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