DIFF Main Group
G01F 25/00 Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
Introduced: September 1968
Of 4 combined children, 2 exist in both systems.
2 codes are CPC-only extensions.
IPC defines codes here since 2022.
Child Classifications
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- G01F 25/20 of apparatus for measuring liquid level since 2022 +2 CPC IPC+CPC Available in IPC and CPC