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G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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FR543761D1920-04-141921-11-21Procédé pour le réglage de compteurs électriques rotatifs
ExpiredFR543761A
(fr)