CPC Subgroup
G11B 5/65 characterised by its composition (G11B5/66 takes precedence)
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 > comprising only the magnetic material without bonding agent > characterised by its composition (G11B5/66 takes precedence)
4 direct subcodes
Child Classifications
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