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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 748

An illustration from U.S. patents issued to Thomas A. Edison from 1883-88, 1900, leaf 748
(No Model.) T. A. EDISON. COMMUTATOR FOR DYNAMO ELECTRIC MACHINES. No. 379,944. Patented Mar. 27, 1888. -o o … H rtripfc n«^ I <i»Mcrw*w WMN«<cim d c

Patents

Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.

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