DIFF Subgroup
G01R 21/02 by thermal methods
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Arrangements for measuring electric power or power factor > by thermal methods
CPC:
Arrangements for measuring electric power or power factor (G01R7/12 takes precedence) > by thermal methods
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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