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G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
G01R11/48—Meters specially adapted for measuring real or reactive components; Meters specially adapted for measuring apparent energy
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FR838191D1938-05-201938-05-20
Device for carrying out wattmeter measurements in alternating current, without contact with the conductors
ExpiredFR838191A
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