CPC Main Group
H04L 13/00 Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
3 direct subcodes
Child Classifications
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- H04L 13/02 Details not particular to receiver or transmitter
- H04L 13/16 of transmitters, e.g. code-bars, code-discs
- H04L 13/18 of receivers