DIFF Subgroup
G11B 5/733 characterised by the addition of non-magnetic particles
Introduced: January 2000
Full Title
Full titles differ between systems:
IPC:
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor > Record carriers characterised by the selection of the material > Base layers > characterised by the addition of non-magnetic particles
CPC:
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (G11B11/00 take precedence) > Record carriers characterised by the selection of the material > Base layers > characterised by the addition of non-magnetic particles
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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