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All Patents in class 200
Patents 16 - 30 of 396
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NumberDatePatenteeTitleType
350,769Oct. 12, 1886G. Smyers, G. RogotPetroleum and Gas Motorgas and gasoline engines
357,585Feb. 15, 1887D.H. DugarSteam Engine Governorsteam engine governors
390,710Oct. 09, 1888H.K. ShanckGas Enginegas and gasoline engines
397,424Feb. 05, 1889H.N. Weidner, W.W. GriscomConnection of Electrical Circuitselectrical connectors
430,038Jun. 10, 1890S. Priestman, W.D. PriestmanMeans for Facilitating the Starting and Regulating the Working of Hydrocarbon Enginesinternal combustion engine governors
439,200Oct. 28, 1890H.K. ShanckGas Engineignition systems
453,022May 26, 1891C.H. NortonGrinding Machinegrinders
460,070Sep. 22, 1891J.T. Hobbs, D.D. HobbsRotary Gas Enginerotary engines
485,620Nov. 08, 1892J.P. FiskeElectric Motor Controllermotor controls
519,338May 08, 1894J.F. McElroyElectric Switchelectric switches
520,748May 29, 1894J.S. BancroftMethod of Operating Electric Motorsmotor controls
522,811Jul. 10, 1894J. WalrathExplosive Gas Enginegas and gasoline engines
524,396Aug. 14, 1894W.B. PotterController for Electric Motorsmotor controls
530,433Dec. 04, 1894F. LaneIndicator for Steam Enginessteam engine indicators
530,597Dec. 11, 1894A.W. MestonAlternating-current transformerelectrical devices
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