CPC Subgroup
G11B 5/73 Base layers
Full Title
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
5 direct subcodes
Child Classifications
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- G11B 5/733 characterised by the addition of non-magnetic particles
- G11B 5/735 characterised by the back layer