US PATENT SUBCLASS 229 / 117.04
.~.~.~ Flat anticollapse element overlies supplemental fold line

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

100  DF  PAPERBOARD BOX {54}
117.01  DF  .~ Collapsible along supplemental fold line {4}
117.03  DF  .~.~ Including anticollapse feature {1}
117.04.~.~.~ Flat anticollapse element overlies supplemental fold line

DEFINITION

Classification: 229/117.04

Flat anticollapse element overlies supplemental fold line:

(under subclass 117.03) Subject matter wherein the structure which prevents the box from collapsing unintentionally is planar and overlaps a supplemental fold line in a box wall. [figure]