CPC Subgroup
G11B 17/025 of discs which are stationary during transducing operation
Full Title
Guiding record carriers not specifically of filamentary or web form, or of supports therefor (guiding cards or sheets G06K13/00) > Details > Positioning or locking of single discs > of discs which are stationary during transducing operation
1 direct subcode
Child Classifications
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