US PATENT SUBCLASS 229 / 125.26
.~.~.~.~ Flange or tab interlocks with downwardly extending flange or tab on box

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}
125.01  DF  .~.~ Nonunitary closure (i.e., not of one-piece construction with the box) {17}
125.19  DF  .~.~.~ Closure includes a depending flange or tab which extends along an adjacent box wall {9}
125.26.~.~.~.~ Flange or tab interlocks with downwardly extending flange or tab on box

DEFINITION

Classification: 229/125.26

Flange or tab interlocks with downwardly extending flange of tab on box:

(under subclass 125.19) Subject matter wherein the top edge of the box has attached to it an angularly related element which overlies all or part of a box wall and which physically interconnects with the closure flange or tab to maintain the nonunitary closure in closed position. [figure]