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 871
N. PETERS, Photo-Uhcgmpher. Washingtw.. D. C (No Motel.) 3 Sheets—Sheet 3. T. A. EDISON. APPARATUS FOR PRODUCING HIGH VACUUMS. No. 248,425. Patented Oot. 18,1881. … Ay ?H>^ United States Patent Office0 THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY, ASSIGNOR TO THEEDISON ELECTRIC LIGHT COMPANY, OF NEW YORK, N. Y. APPARATUS FOR PRODUCING HIGH VACUUMS. SPECIFICATION forming part of Letters Patent No. 248,425, dated October 18, 1881. Application filed March 29,…
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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