US PATENT SUBCLASS 229 / 307
.~ Having means to facilitate opening the envelope by severing it (e.g., tearing, cutting, piercing, etc.)

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

68.1  DF  ENVELOPE {10}
307.~ Having means to facilitate opening the envelope by severing it (e.g., tearing, cutting, piercing, etc.) {3}
308  DF  .~.~> Combined with, or modified for opening by, a sharp-edged cutting implement or a piercing implement
309  DF  .~.~> Envelope includes a separate tearing element which is gripped and pulled to open the envelope {2}
313  DF  .~.~> Line of weakness {2}

DEFINITION

Classification: 229/307

Having means to facilitate opening the envelope by severing it (e.g., tearing, cutting, piercing, etc.):

(under subclass 68) Subject matter wherein the envelope includes means which enables splitting of the envelope material to gain access to the envelope interior to insert or remove content.

SEE OR SEARCH CLASS

383, Flexible Bags,

200+, for a bag with severing means.

428, Stock Material or Miscellaneous Articles,

43, for a sheet, web or layer which has been weakened to facilitate tearing and subclasses 131+, particularly subclass 136, for sheet material having slits or apertures.