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PCE
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DIFF Subgroup
G11B 23/0301

Full Title

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 > Containers; Storing means > Containers for flat record carriers

Of 10 combined children, 0 exist in both systems.

10 codes are CPC-only extensions.