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All Patents of Type: DC motors
Patents 1 - 13 of 13
First set of recordsLast set of records
132Feb. 25, 1837T. DavenportImprovement in propelling machinery by magnetism and electro-magnetismDC motors
248,435Oct. 18, 1881T.A. EdisonUtilizing Electricity as Motive PowerDC motors
264,982Sep. 26, 1882E. WestonElectro Magnetic 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
539,277May 14, 1895J.C. LincolnElectric MotorDC motors
660,908Oct. 30, 1900B.G. LammeVariable-speed electric motorDC motors
829,975Sep. 04, 1906J.C. LincolnVariable Speed Electric MotorDC motors
847,088Mar. 12, 1907J.C. LincolnVariable Speed Electric MotorDC motors
1,043,325Nov. 05, 1912J.C. LincolnVariable Speed Electric MotorDC motors
1,194,645Aug. 15, 1916J.C. LincolnVariable Speed Electric MotorDC motors
1,669,134May 08, 1928N.T. KelsoMolded commutatorelectric motor making
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