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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 1671

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 1671
combination with a cover constructed to exclude air, substan- 1tially as set forth. 7. A flat shallow mold for carbonizing fila- 80ments, provided with means for holding suchfilaments under strain and permitting contrac-tion during carbonization,and having an edge Igroove, in combination with a… … WITNESSES: ^~/~^ INVENTOR: ATTORNEY S, Photo-Lithographer. Washington, D. United States Patent Office. THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY, ASSIGNOR TO THEEDISON ELECTRIC LIGHT COMPANY, OP NEW YORK, N. Y. DYNAMO OR MAGNETO ELECTRIC MACHINE. SPECIFICATION forming part of Letters Patent Wo.…

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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