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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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FR732600D1931-03-061932-03-03Procédé pour la détermination des erreurs de compteurs d'électricité et appareil étalon pour sa mise en oeuvre
ExpiredFR732600A
(fr)