IPC Subgroup
G04F 10/1 by measuring electric or magnetic quantities changing in proportion to time
Introduced: July 1974
Last revised: January 2006
Full Title
Apparatus for measuring unknown time intervals by electric means > by measuring electric or magnetic quantities changing in proportion to time
Classification Context
- Section:
- PHYSICS
- Class:
- HOROLOGY
- Subclass:
- TIME-INTERVAL MEASURING