IPC Definitions - January 01, 2012

H04L 15/00 - Definition fr

Definition statement

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

Informative references

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