US PATENT SUBCLASS 402 / 6
.~ With means to apply tension thereto

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

5  DF  PIVOTAL LINK TYPE SHEET RETAINER {1}
6.~ With means to apply tension thereto

DEFINITION

Classification: 402/6

(under subclass 5) Device including a mechanical movement (e.g., linkage system, spring, screw rod with nut, etc.) which retracts a portion of the length of the sheet retainer to reduce the sheet storage capacity of the device.