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 437
is of such a light color that thepaper remains nearly white, and the mark willbe produced by a platina pen or stilus, towhich the negative pole is connected. I claim as my invention— The solution for chemical telegraph-paper,prepared with tincture of logwood, substan-tially as set forth. Signed by… … THE GRAPHIC CO.PHOTO-LITH.39 &41 PARK PLACE, N.Y. United States Patent Office. THOMAS A. EDISON, OF NEWAEK, NEW JEESET, ASSIGNOR TO HIMSELFAND GEOEGE HAEEINGTON, OF WASHINGTON, D. 0. IMPROVEMENT IN ADJUSTABLE ELECTRO-MAGNETS FOR RELAYS, &c. Specification forming part of Letters Patent No.…
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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