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 349
cuits, inwhich are differing magnets for operation up-on the chemical-receiving paper, as set forth. 3. The vessel of liquid receiving the twoends of the shunt-circuit and the two ends ofthe main line to vary the strength, of the shunt-circuit according to the relative positions ofsuch circuit… … United States Patent Office. THOMAS A. EDISON, OF NEWABK, NEW JERSEY, ASSIGNOR TO HIMSELF ANDGEORGE HARRINGTON, OF WASHINGTON, DISTRICT OF COLUMBIA. IMPROVEMENT IN CHEMICAL TELEGRAPHS. Specification forming part of Letters Patent No. 141,•J?4, dated August 12,1873; application filed March 13,1873.…
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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