DIFF Subgroup
G01P 21/02 of speedometers
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Testing or calibrating of apparatus or devices covered by the other groups of this subclass > of speedometers
CPC:
Testing or calibrating of apparatus or devices covered by the preceding groups > of speedometers
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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