IPC Definitions - January 01, 2012

G09F 25/00 - Definition fr

Definition statement

This main group covers:

Advertising in audible form.

References relevant to classification in this main group

This main group does not cover:

combined visual and audible advertising

G09F 27/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

sound-recording or reproducing in general

G11B

public address systems

H04R 27/00