US PATENT SUBCLASS 229 / 916
.~ Means for ventilating while stacked

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

915  DF  STACKING FEATURE {5}
916.~ Means for ventilating while stacked

DEFINITION

Classification: 229/916

Means for ventilating while stacked:

(under subclass 915) Subject matter wherein the box includes means which facilitates the circulation of air either through it or between it and another adjacent stacked box or boxes while in a stacked configuration.