Inside Out Library

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 941

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 941
, F, is a McLeodgage, I, fur determining the degree of exhaus-tion. 6 What I claim is— In a Sprengel air-pump, the mercury-supplytube having formed integral therewith a con-traction above the fall-tube for regulating theflow of mercury, substantially as and for the 6purpose specified. This… … United States Patent Office THOMAS A. EDISON/, OP MENLO PARK, NEW JERSEY.DYNAMO-ELECTRIC MACHINE. SPECIFICATION forming part of Letters Patent No. 251,537, dated December 27, 1881.Application filed August 30, 1881. (No model.) To all whom it may concern: Be it known that I, Thomas A. Edison,…

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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