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Patents for Thomas A. Edison
Patents 1 - 7 of 7
First set of recordsLast set of records
113,034Mar. 28, 1871T.A. EdisonImprovement in printing-telegraph apparatustelegraphy apparatus
132,456Oct. 22, 1872T.A. EdisonImprovement in apparatus for perforating paper for telegraphic usetelegraphy apparatus
200,032Feb. 05, 1878T.A. EdisonSynchronous Movements for Electric Telegraphstelegraphic apparatus
248,435Oct. 18, 1881T.A. EdisonUtilizing Electricity as Motive PowerDC motors
251,541Dec. 27, 1881T.A. EdisonElectric Magnetic Motormotor controls
273,490Mar. 06, 1883T.A. EdisonElectro Magnetic Railway System
287,511Oct. 30, 1883T.A. EdisonElectric Regulatormotor regulators
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