US PATENT SUBCLASS 229 / 84
.~.~ Tongue

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

68.1  DF  ENVELOPE {10}
76  DF  .~ Closures {3}
84.~.~ Tongue

DEFINITION

Classification: 229/84

(under subclass 76) Envelope closures wherein the closing is effected simply by a tucked-in tongue with no sealing-flap.