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All Patents in class 310/224
Patents 1 - 10 of 10
First set of recordsLast set of records
227,623May 18, 1880W.W. GriscomElectro-Magnetic MotorDC motors
564,559Jul. 21, 1896R. EickemeyerDynamo-electric machine
597,419Jan. 18, 1898F.A. JohnsonRegulation of dynamo-electric machineryelectric motors
854,704May 21, 1907W.J. RichardsDynamo-electric machinemotor commutators
1,051,821Jan. 28, 1913W.H. PowellDynamo-electric machineelectric motors
1,074,392Sep. 30, 1913L.H. Thullen, F.W. WilleyElectric-motor regulation and controlmotor regulators
1,111,504Sep. 22, 1914C.H. SmootCommutating dynamo-electric machineelectric motors
1,115,724Nov. 03, 1914J.D. NiesDynamo-electric machineelectric motors
1,121,065Dec. 15, 1914B.J. BoicourtMethod of and apparatus for preventing sparking in dynamo-electric machineselectrical devices
1,870,302Aug. 09, 1932H. WeichselAlternating current motorAC motors
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