CPC Subgroup
H04L 15/12 with keyboard co-operating with code-bars
Full Title
Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code (teaching apparatus therefor G09B; telegraph tapping keys H01H21/86) > Apparatus or circuits at the transmitting end > with keyboard co-operating with code-bars
1 direct subcode
Child Classifications
Navigate with arrow keys, Enter to open
- H04L 15/14 combined with perforating apparatus