Collection of United States patents granted to Thomas A. Edison, 1869-1884 (1869)
Edison, Thomas A. (Thomas Alva), 1847-1931, Peters, N. (Norris), lithographer, Hammer, William Joseph, 1858-1934, former owner. DSI, Edison, Thomas A. (Thomas Alva), 1847-1931, inscriber. DSI, United States. Patent Office · Washington, D.C. : U.S. Patent Office · leaf 761
T. A. EDISON. Electro Chemical Receiving Telephone. No. 231,704. Patented Aug. 31, 1880. … United States Patent Office0 THOMAS A. EDISON, OF MENLO PAEK, NEW JEESEY.ELECTRO-CHEMICAL RECEIVING-TELEPHONE. SPECIFICATION forming part of Letters Patent No. 231,704, dated August 31, 1880. Application filed July 25,1879. To all whom it may concern: Be it known that I, Thomas A. Edison, ofMenlo…
Trade catalogs · Patents · Edison, Thomas A. (Thomas Alva), 1847-1931 · Inventions · Telegraph · Electric machinery · Electric apparatus and appliances · Phonograph · Telephone · Motors
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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