US PATENT SUBCLASS 229 / 930
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Current as of: June, 1999
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229 /   HD   ENVELOPES, WRAPPERS, AND PAPERBOARD BOXES

930FOLD DETAIL {1}
931  DF  .~> Fold includes slit or aperture

DEFINITION

Classification: 229/930

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(under the class definition) Subject matter wherein a particular physical characteristic or structure of a receptacle crease is claimed.