IPC Main Group
G04F 13/00 Apparatus for measuring unknown time intervals by means not provided for in groups
Introduced: July 1974
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- HOROLOGY
- Subclass:
- TIME-INTERVAL MEASURING
3 direct subcodes
Child Classifications
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- G04F 13/02 using optical means
- G04F 13/04 using electrochemical means
- G04F 13/06 using fluidic means