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Class Information
Number: 402/43
Name: Binder device releasably engaging aperture or notch of sheet > Sheet retainer travels arcuate path > Travel in plane perpendicular to axis of rotation > Opposed sheet retainers (e.g., ring binders, etc.) > Rotatable on discrete hinge pin > Plural pairs of opposed retainers independently operable
Description: Device including at least two sets of contralaterally aligned or offset sheet retainers with one or both retainers of each set being separately manipulated between and overlapped or abutting closed relation to cooperatively secure at least a portion of a sheet and an open position permitting release of that portion.










Patents under this class:

Patent Number Title Of Patent Date Issued
8162556 Actuator for a ring binder mechanism Apr. 24, 2012
6702501 Loose-leaf binder Mar. 9, 2004
6371678 Loose-leaf binder Apr. 16, 2002
6293722 Binder Mechanism Sep. 25, 2001
4886390 Loose leaf binder Dec. 12, 1989
4190374 Loose-leaf binder Feb. 26, 1980











 
 
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