CPC Subgroup
G01R 21/06 by measuring current and voltage (G01R21/08 - G01R21/133 take precedence)
Full Title
Arrangements for measuring electric power or power factor (G01R7/12 takes precedence) > by measuring current and voltage (G01R21/08 - G01R21/133 take precedence)
1 direct subcode
Child Classifications
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- G01R 21/07 in circuits having distributed constants (G01R21/09 takes precedence)