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All Patents in class 310/244
Patents 1 - 8 of 8
First set of recordsLast set of records
171,087Dec. 14, 1875J. BishopElectro Magnetic Engineselectric motors
227,623May 18, 1880W.W. GriscomElectro-Magnetic MotorDC motors
334,823Jan. 26, 1886N. TeslaCommutator for dynamo-electric machines
345,336Jul. 13, 1886E. ThomsonCommutator Brushmotor brushes
397,492Feb. 12, 1889R. EickemeyerBrush for electric generatorselectric generators
714,769Dec. 02, 1902W. Zabel, B. Zabel, C. ZabelCarbon Holder for Dynamo Electric Machinesmotor brush holders
942,264Dec. 07, 1909A. KimbleBrush-holdermotor brush holders
967,474Aug. 16, 1910R.B. WilliamsonBrush-holdermotor brush holders
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