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 407
. When the circuit is brokenat the transmitter, the surplus current whichremains on the line prevents this portion ofthe current passing to the chemical paper;hence the tailing is not made to the mark. I claim— A stylus for a chemical receiving-instrument,in combination with mechanism for… … AM.PHOTO-LITHOGflAPHIC Co./V. Y(OSBORNES PSOQESS.) United States Patent Office. THOMAS A. EDISON, OF NEWARK, NEW JEESEY, ASSIGNOR TO HIMSELFAND GEOEGE HARRINGTON, OF WASHINGTON, D. 0. IMPROVEMENT IN CHEMICAL OR AUTOMATIC TELEGRAPHS. Specification forming part of Letters Patent No. 150,84.8, dated…
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.
