Testing or calibrating of apparatus covered by the other groups of this subclass

Introduced: September 1968

Of 4 combined children, 2 exist in both systems.

2 codes are CPC-only extensions.

Child Classifications

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G01R 35/002 CPC only CPC only
G01R 35/005 +1 CPC CPC only CPC only
G01R 35/02 of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating IPC+CPC Available in IPC and CPC
G01R 35/04 of instruments for measuring time integral of power or current IPC+CPC Available in IPC and CPC