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IPC Main Group
G04F 8/00

Apparatus for measuring unknown time intervals by electromechanical means

Introduced: July 1974

Last revised: January 2006

Classification Context

Section:
PHYSICS
Class:
HOROLOGY
Subclass:
TIME-INTERVAL MEASURING

2 direct subcodes

Child Classifications

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  • G04F 8/08 Means used apart from the time-piece for starting or stopping same