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All Patents of Type: AC motors
Patents 1 - 15 of 571
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
261,712Jul. 25, 1882W. HochhausenCommutator for Dynamo-Electric Machineselectric motors
269,605Dec. 26, 1882E. ThomsonDynamo Electric Machineelectric motors
271,175Jan. 23, 1883S.S. Wheeler, F.B. Crocker, C.G. CurtisElectric Motorelectric motors
271,947Feb. 06, 1883E. ThomsonCommutator for Dynamo Machinesmotor commutators
281,416Jul. 17, 1883E. ThomsonDynamo Electric Machinemotor armatures
283,546Aug. 21, 1883E. WestonElectro-magnetic motorelectric motors
287,511Oct. 30, 1883T.A. EdisonElectric Regulatormotor regulators
289,197Nov. 27, 1883E. WestonSafety Cut-Out for Electric Magnetic Motorselectric motors
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