US PATENT SUBCLASS 229 / 157
.~.~.~.~.~ The one extension projects through an opening in each of the others


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}
155  DF  .~.~.~ Plural extensions mechanically interlocked with each other {2}
156  DF  .~.~.~.~ One extension interlocks with at least two others {1}
157.~.~.~.~.~ The one extension projects through an opening in each of the others


DEFINITION

Classification: 229/157

The one extension projects through an opening in each of the others:

(under subclass 156) Subject matter wherein the interconnection is formed by a portion or portions of the one extension extending through a slit or aperture in each of the other extensions.

SEE OR SEARCH THIS CLASS, SUBCLASS:

149+, for a foldable wall extension having depending flange or tab which extends along an adjacent box wall and through an opening in the box material. [figure]