DIFF Main Group
G09F 25/00 Audible advertising (sound recording or reproducing per se G11B; public address systems H04R27/00)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Audible advertising
CPC: Audible advertising (sound recording or reproducing per se G11B; public address systems H04R27/00)
Full Title
Full titles differ between systems:
IPC:
Audible advertising
CPC:
Audible advertising (sound recording or reproducing per se G11B; public address systems H04R27/00)
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Note: 1 CPC extensions are marked as secondary classification only.
Child Classifications
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