DIFF Subgroup
G11B 19/12 by sensing distinguishing features of records, e.g. diameter
Introduced: September 1968
Full Title
Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function > Control of operating function, e.g. switching from recording to reproducing > by sensing distinguishing features of records, e.g. diameter
Of 6 combined children, 0 exist in both systems.
6 codes are CPC-only extensions.
Child Classifications
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