IPC Subgroup
H04B 7/24 for communication between two or more posts
Introduced: July 1974
Last revised: January 2006
Full Title
Radio transmission systems, i.e. using radiation field > for communication between two or more posts
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- TRANSMISSION
1 direct subcode
Child Classifications
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- H04B 7/26 at least one of which is mobile