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PCE
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CPC Subgroup
G11B 19/28

Speed controlling, regulating, or indicating (G11B19/24 takes precedence)

Full Title

Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function > Driving; Starting; Stopping; Control thereof > Speed controlling, regulating, or indicating (G11B19/24 takes precedence)