US PATENT SUBCLASS 229 / 185.1
.~ Single piece of paperboard folded to form a box having four or more multilayer walls

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

100  DF  PAPERBOARD BOX {54}
185.1.~ Single piece of paperboard folded to form a box having four or more multilayer walls