Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption (monitoring electric consumption of electrically-propelled vehicles B60L3/00)

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G01R 11/02 Constructional details
G01R 11/30 Dynamo-electric motor meters
G01R 11/36 Induction meters, e.g. Ferraris meters
G01R 11/46 Electrically-operated clockwork meters; Oscillatory meters; Pendulum meters
G01R 11/48 Meters specially adapted for measuring real or reactive components; Meters specially adapted for measuring apparent energy
G01R 11/56 Special tariff meters