US PATENT SUBCLASS 402 / 62
.~.~ Apertured retainer


Current as of: June, 1999
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402 /   HD   BINDER DEVICE RELEASABLY ENGAGING APERTURE OR NOTCH OF SHEET

60  DF  SHEET RETAINER WITH RELEASABLE KEEPER (E.G., HOLD DOWN, ETC.) {3}
61  DF  .~ Keeper cooperating with retainer of varying cross-section {2}
62.~.~ Apertured retainer


DEFINITION

Classification: 402/62

(under subclass 61) 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.