US PATENT SUBCLASS 229 / 311
.~.~.~ Cord, string, wire, or thread

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

68.1  DF  ENVELOPE {10}
307  DF  .~ Having means to facilitate opening the envelope by severing it (e.g., tearing, cutting, piercing, etc.) {3}
309  DF  .~.~ Envelope includes a separate tearing element which is gripped and pulled to open the envelope {2}
311.~.~.~ Cord, string, wire, or thread {1}
312  DF  .~.~.~.~> Extends along envelope side edge

DEFINITION

Classification: 229/311

Cord, string, wire, or thread:

(under subclass 309) Subject matter wherein the separate tearing element is a slender, flexible, filament-like element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

239, for a box having a cord, string, thread, or wire for tearing it open.

SEE OR SEARCH CLASS

215, Bottles and Jars,

257, for a bottle or jar closure having a wire or string rip cord.

220, Receptacles,

279+, for a closure having a thread, string, cord, or wire for tearing it open. 383, Flexible Bags,

206, for a flexible bag having a cord, string, wire, or thread for tearing it open.