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All Patents of Type: electric railways
Patents 1 - 4 of 4
First set of recordsLast set of records
276,569May 01, 1883l. DaftElectric Railwayelectric railways
318,668May 26, 1885F.J. SpragueMethod of Operating Electric Railway Trainselectric railways
871,220Nov. 19, 1907T. Gilmore, Jr.Controllermotor controls
871,970Nov. 26, 1907E.W. StullSystem of motor controlmotor controls
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