DIFF Subgroup
G11B 23/28 Indicating prior or unauthorised use,
Introduced: September 1968
Title
Titles differ between systems:
IPC: indicating prior or unauthorised use
CPC: Indicating prior or unauthorised use,
Full Title
Full titles differ between systems:
IPC:
Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus > indicating prior or unauthorised use
CPC:
Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus > Indicating prior or unauthorised use,
Of 5 combined children, 0 exist in both systems.
5 codes are CPC-only extensions.
Child Classifications
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