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 877
ng mercury for use in drop or5 Sprengel pumps, the method of relieving themercury of watery vapors and causing it toflow more readily, which consists in heatingthe mercury prior to its passage through thepumps, substantially as set forth. In testimony whereof I have hereunto af- iofixed my… … N. PETERS. Photo-Lithographer. Washington. D. C. United States Patent Office. THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY, ASSIGNOR TO THEEDISON ELECTRIC LIGHT COMPANY, OF NEW YORK, N. Y. APPARATUS FOR TREATING CARBONS FOR ELECTRIC LAMPS. SPECIFICATION forming part of Letters Patent No. 248,426,…
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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