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All Patents in class 322/71
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
276,569May 01, 1883L. DaftElectric Railwayelectric railroads
309,536Dec. 23, 1884W.K. FreemanRegulator for Electric Generators & Motorsmotor regulators
432,652Jul. 22, 1890E. ThomsonWelding or other dynamowelding
2,102,481Dec. 14, 1937C.W. NoeDynamo motorwelding machines
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