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 1473
tbe done by means of the Sprengel pump,meansbeing connected with the pump for filling theglobe with the hydrochloric-acid gas. What I claim is— 45 An incandescing electric lamp whose resid-ual atmosphere consists almost entirely of hy-drochloric-acid gas, substantially as set forth. This…
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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