US PATENT SUBCLASS 229 / 164.1
.~ Flexible or flaccid external covering formed from an initially separate sheet of material (e.g., wrapper)


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229 /   HD   ENVELOPES, WRAPPERS, AND PAPERBOARD BOXES

100  DF  PAPERBOARD BOX {54}
164.1.~ Flexible or flaccid external covering formed from an initially separate sheet of material (e.g., wrapper)