DIFF Subgroup
G01R 19/02 Measuring effective values, i.e. root-mean-square values
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Arrangements for measuring currents or voltages or for indicating presence or sign thereof > Measuring effective values, i.e. root-mean-square values
CPC:
Arrangements for measuring currents or voltages or for indicating presence or sign thereof (G01R5/00 takes precedence; for measuring bioelectric currents or voltages A61B5/24) > Measuring effective values, i.e. root-mean-square values
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1985.
Child Classifications
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