IPC Definitions - January 01, 2012
H04L 15/00 - Definition
This main group covers:
Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code.
References relevant to classification in this main group
This main group does not cover:
Teaching apparatus for dot-and-dash codes | G09B |
Telegraph tapping keys | H01H 21/86 |
Attention is drawn to the following places, which may be of interest for search:
Keyboard switches in general | H01H 13/70, H03K 17/94 |
Coding in connection with keyboards or like devices, in general | H03M 11/00 |