US PATENT SUBCLASS 40 / 402
.~.~.~.~ Opposed prongs cooperating with aperture

Current as of: June, 1999
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40 /   HD   CARD, PICTURE, OR SIGN EXHIBITING

371  DF  REGISTER, OR FILE (E.G., TELEPHONE DIRECTORY FILE) {8}
388  DF  .~ Hinge mounted file item or file item support {6}
391  DF  .~.~ Overlying with end exposed (i.e., shingled) {7}
401  DF  .~.~.~ Secured by means through aperture or notch or engaging a protrusion in the file item {1}
402.~.~.~.~ Opposed prongs cooperating with aperture

DEFINITION

Classification: 40/402

Opposed prongs cooperating with aperture:

(under subclass 401) Device in accordance with part (1) or (2) thereof wherein a pair of elongated components pass through the thickness dimension of the sheet and cooperate to releasably secure the sheet.

SEE OR SEARCH THIS CLASS, SUBCLASS:

107+, for a similar device for the retention of calendar leaves.

SEE OR SEARCH CLASS

402, Binder Device Releasably Engaging Aperture or Notch of Sheet,

20, for elongated opposed resilient sheet-retainers which require deflection for sheet removal; subclasses 26+ for opposed sheet-retainers requiring an arcuate motion of the retainers for removal of a sheet therefrom; and subclasses 31+ for opposed elongated.