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CPC Subgroup
G01R 1/28

Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform

Full Title

Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00 (constructional details particular to arrangements for measuring the electric consumption G01R11/02) > Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform