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 305
in the line as they dischargethemselves, thereby freeing the line at one ormore places, as circumstances require.I claim as my invention-One or more electro-magnets, arranged in alocal or branch circuit, substantially as setforth, in combination with a chemical tele-graphic receiving instrument,… … AM. PHOTO -LITHD GRAPHIC CO. N. Y.(OSBORNES PROCESS.) United States Patent Office. THOMAS A. EDISON, OF NEWABK, NEW JEBSEY.IMPROVEMENT IN PRINTING-TELEGRAPHS. Specification forming partof Letters Patent No. 138,869, dated May 13, 1873; application filed October 22, 1872. To all whom it may concern:…
Trade catalogs · Patents · Edison, Thomas A. (Thomas Alva), 1847-1931 · Inventions · Telegraph · Electric machinery · Electric apparatus and appliances · Phonograph · Telephone · Motors
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