US PATENT SUBCLASS 229 / 148
.~.~.~.~ Flange or tab includes slit or aperture to receive a projection from a box wall

Current as of: June, 1999
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229 /   HD   ENVELOPES, WRAPPERS, AND PAPERBOARD BOXES

100  DF  PAPERBOARD BOX {54}
124  DF  .~ With closure for an access opening {7}
126  DF  .~.~ Foldable wall extension (e.g., closure flap) {13}
141  DF  .~.~.~ Extension includes a depending flange or tab which extends along an adjacent box wall {9}
148.~.~.~.~ Flange or tab includes slit or aperture to receive a projection from a box wall

DEFINITION

Classification: 229/148

Flange or tab includes slit or aperture to receive a projection from a box wall:

(under subclass 141) Subject matter wherein a depending flange or tab has an opening in it disclosed for accepting a protrusion from a wall of the box to aid in maintaining the closure in its closed position. [figure]

SEE OR SEARCH THIS CLASS, SUBCLASS:

125.29, for a separate closure having a slit or aperture which receives a projection from a box wall.