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Class Information
Number: 402/69
Name: Binder device releasably engaging aperture or notch of sheet > Sheet retainer with releasable keeper (e.g., hold down, etc.) > Keeper including apertured or recessed sheet retainer receiving component > Spring biased
Description: Device wherein the keeper is urged toward or away from a secured position by a resilient force-transmitting element.

Patents under this class:

Patent Number Title Of Patent Date Issued
8425139 Sheet holder and edge pattern making apparatus incorporating the same Apr. 23, 2013
7874758 Binding device Jan. 25, 2011
7648302 Ring binder mechanism Jan. 19, 2010
7318684 File mechanism Jan. 15, 2008
6663310 Button binder Dec. 16, 2003
5921693 Binding system for loose leaf papers Jul. 13, 1999
5697722 Ring binder mechanism having spring closure mechanism Dec. 16, 1997
4984925 Structure of binding clip Jan. 15, 1991
4820072 Note-book Apr. 11, 1989
4674905 Pre-assembled post lock assembly for loose leaf binders Jun. 23, 1987
4411544 Post binder ball lock assembly Oct. 25, 1983
4405250 Adjustable looseleaf binder Sep. 20, 1983
4401323 Holder for credit card purchase form Aug. 30, 1983
4264228 Composite looseleaf mechanism Apr. 28, 1981
3947138 Paper pad clamping fixture Mar. 30, 1976

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