IPC Subgroup
G08C 19/12 in which the signal transmitted is frequency or phase of AC
Introduced: September 1968
Last revised: January 2006
Full Title
Electric signal transmission systems > in which the signal transmitted is frequency or phase of AC
Classification Context
- Section:
- PHYSICS
- Class:
- SIGNALLING
- Subclass:
- TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
1 direct subcode
Child Classifications
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- G08C 19/14 using combination of fixed frequencies