CPC Subgroup
H04H 20/65 Arrangements characterised by transmission systems for broadcast
Full Title
Arrangements for broadcast or for distribution combined with broadcast > Arrangements characterised by transmission systems for broadcast
4 direct subcodes
Child Classifications
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- H04H 20/67 Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency
- H04H 20/69 Optical systems
- H04H 20/71 Wireless systems
- H04H 20/76 Wired systems