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All Patents in class 388
Patents 1 - 15 of 49
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NumberDatePatenteeTitleType
251,541Dec. 27, 1881T.A. EdisonElectric Magnetic Motormotor controls
264,981Sep. 26, 1882E. WestonSystem for the Electrical Transmission of Powerelectric distribution systems
272,365Feb. 13, 1883E. WestonSystem for the Electrical Transmission of Powerelectric distribution systems
275,842Apr. 17, 1883J.C. Cebrian, E.J. MoleraSpeed Regulator and Reversing Device for Electric Motorsmotor regulators
284,382Sep. 04, 1883C.L. ClarkeCircuit and Apparatus for Electric Temperature and Pressure Indicatorvacuum and pressure gauges
298,550May 13, 1884C.G. BurkeRegulator for Electric Motorsmotor regulators
313,546Mar. 10, 1885F.J. SpragueElectric Dynamic MotorDC motors
315,181Apr. 07, 1885F.J. SpragueElectric Motor and Generatorelectric motors
335,863Feb. 09, 1886J. WeisElectric Motormotor brush holders
353,367Nov. 30, 1886A.W. MestonGovernor for electric motorsmotor regulators
372,231Oct. 25, 1887A.W. MestonRegulator for electric motorselectric motors
390,820Oct. 09, 1888N. TeslaRegulator for Alternate-Current Motors
448,326Mar. 17, 1891R. EickemeyerMethod of and apparatus for developing mechanical motion from electrical energy
485,620Nov. 08, 1892J.P. FiskeElectric Motor Controllermotor controls
500,274Jun. 27, 1893W.L. Tyler, A.B. SeeRegulating Switch for Electric Elevatorsmotor controls
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