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PCE
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CPC Subgroup
G01R 21/01

in circuits having distributed constants (G01R21/04, G01R21/07, G01R21/09, G01R21/12 take precedence)

Full Title

Arrangements for measuring electric power or power factor (G01R7/12 takes precedence) > in circuits having distributed constants (G01R21/04, G01R21/07, G01R21/09, G01R21/12 take precedence)