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Class Information
Number: 84/128
Name: Music > Instruments > Automatic > Selectors > Winding and rewinding > Speed control
Description: Means for regulating the constant or momentary speed of the note sheet-tempo control.

Sub-classes under this class:

Class Number Class Name Patents
84/130 By wind supply 0
84/131 Compensation for diameter 0
84/129 Roller and disk or cone 3

Patents under this class:

Patent Number Title Of Patent Date Issued
6842168 Accessory for multimedia console Jan. 11, 2005
6078000 Structure of a magnet coupled type white glass ball transmission Jun. 20, 2000

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