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All Patents of Type: electric meters
Patents 1 - 9 of 9
First set of recordsLast set of records
NumberDatePatenteeTitleType
392,386Nov. 06, 1888E. WestonElectrical Measuring Apparatuselectric meters
392,387Nov. 06, 1888E. WestonElectrical Measuring Apparatuselectric meters
426,992Apr. 29, 1890M.M. GarverElectrical Measuring Instrumentelectric meters
427,022Apr. 29, 1890E. WestonElectrical Measuring Instrumentelectric meters
D19,895Jun. 10, 1890E. WestonCase for Electrical Instrumentselectric meters
D19,896Jun. 10, 1890E. WestonMagnetelectric meters
540,153May 28, 1895M. von Dolivo-DobrowolskyApparatus for determining differences between phases of two electric alternating currentselectric meters
681,002Aug. 20, 1901A. PelouxMotor Meter for Alternating Currentselectric meters
715,220Dec. 02, 1902M.E. ThompsonMeans of Measuring Alternating Electric Currentselectric meters
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