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Class Information
Number: 402/62
Name: Binder device releasably engaging aperture or notch of sheet > Sheet retainer with releasable keeper (e.g., hold down, etc.) > Keeper cooperating with retainer of varying cross-section > Apertured retainer
Description: Device wherein the variation in cross-section is in the form of an opening which (1) has a continuous periphery (2) extends through the sheet retainer and (3) is disposed at an angle to the longitudinal axis of the sheet retainers.

Patents under this class:

Patent Number Title Of Patent Date Issued
8083429 Modular locking binder system Dec. 27, 2011
7575388 Binder for filing tool Aug. 18, 2009
7018125 Notebook having integral binder members Mar. 28, 2006
7001096 Paper binder Feb. 21, 2006
6821045 Ring metal shield for use with concealed fastener Nov. 23, 2004
6361235 Device for binding together a stack of document sheets Mar. 26, 2002
6234701 Molded plastic binder May. 22, 2001
6217246 Two-piece paper fastener having rounded sides Apr. 17, 2001
6030140 Binder Feb. 29, 2000
5988925 Stacked paper fastener Nov. 23, 1999
5845941 Multi clip binder with unique clip positioning Dec. 8, 1998
5257870 Paper retaining means Nov. 2, 1993
5234232 Bookbinding apparatus and method of binding sheets Aug. 10, 1993
5096323 Prong type stacked paper fastener Mar. 17, 1992
5037228 Single piece file clasp Aug. 6, 1991
4743048 Multi-fold adjustable binder, book, and method May. 10, 1988
4730972 Book binding method, paper sheets binder and adjustable spine Mar. 15, 1988
4606666 Paper binder Aug. 19, 1986
4579472 Devices for holding sheets Apr. 1, 1986
4305675 File fastener Dec. 15, 1981

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