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All Patents of Type: AC motors
Patents 1 - 15 of 595
First set of recordsNext set of recordsLast set of records
132Feb. 25, 1837T. DavenportImprovement in propelling machinery by magnetism and electro-magnetismDC motors
26,558Dec. 27, 1859G.W. BeardsleeImproved magneto-electric machineelectric motors
96,332Nov. 02, 1869G. LittleImprovement in Electro-Magnetic Motorselectric motors
CA-686Nov. 05, 1870H. WoodImprovement in electro magnetic machines and magnetselectric motors
CA-919Apr. 11, 1871A. Ross, M.H. UtleyImprovements on electro-magnetic motorselectric motors
138,855May 13, 1873S.C. CarterElectro-Magnetic Motorselectric motors
171,087Dec. 14, 1875J. BishopElectro Magnetic Engineselectric motors
248,435Oct. 18, 1881T.A. EdisonUtilizing Electricity as Motive PowerDC motors
251,541Dec. 27, 1881T.A. EdisonElectric Magnetic Motormotor controls
261,712Jul. 25, 1882W. HochhausenCommutator for Dynamo-Electric Machineselectric motors
264,982Sep. 26, 1882E. WestonElectro Magnetic MotorDC motors
269,605Dec. 26, 1882E. ThomsonDynamo Electric Machineelectric motors
271,175Jan. 23, 1883F.B. Crocker, C.G. Curtis, S.S. WheelerElectric Motorelectric motors
271,947Feb. 06, 1883E. ThomsonCommutator for Dynamo Machinesmotor commutators
275,842Apr. 17, 1883J.C. Cebrian, E.J. MoleraSpeed Regulator and Reversing Device for Electric Motorsmotor regulators
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