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Class Information
Number: 402/67
Name: Binder device releasably engaging aperture or notch of sheet > Sheet retainer with releasable keeper (e.g., hold down, etc.) > Keeper including wedge type securing means > With screw threaded wedge driving means
Description: Device in which the wedge-type securing means for the keeper is actuated by the rotation of a helically grooved member associated therewith.










Patents under this class:

Patent Number Title Of Patent Date Issued











 
 
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