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All Patents of Type: DC motors
Patents 1 - 15 of 30
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NumberDatePatenteeTitleType
132Feb. 25, 1837T. DavenportImprovement in propelling machinery by magnetism and electro-magnetismDC motors
227,622May 18, 1880W.W. GriscomElectro-Magnetic MotorDC motors
227,623May 18, 1880W.W. GriscomElectro-Magnetic MotorDC motors
227,845May 18, 1880W. SawyerDynamo Electric MachineDC motors
248,435Oct. 18, 1881T.A. EdisonUtilizing Electricity as Motive PowerDC motors
264,982Sep. 26, 1882E. WestonElectro Magnetic MotorDC motors
313,546Mar. 10, 1885F.J. SpragueElectric Dynamic MotorDC motors
316,091Apr. 21, 1885E. WestonElectro-Magnetic MotorDC motors
316,092Apr. 21, 1885E. WestonElectro Magnetic MotorDC motors
324,667Aug. 18, 1885P. DiehlElectric MotorDC motors
324,891Aug. 25, 1885F.J. SpragueElectric Dynamic MotorDC motors
335,781Feb. 09, 1886F.J. SpragueElectric Dynamic MotorDC motors
336,780Feb. 23, 1886R.E. BallDynamo Electric Machinemotor regulators
356,834Feb. 01, 1887W.W. GriscomElectric MotorDC motors
403,630May 21, 1889T.L. WilsonDynamo Electric MachineDC motors
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