US PATENT SUBCLASS 229 / 67.4
.~ Including closure
Current as of:
June, 1999
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229 /
HD
ENVELOPES, WRAPPERS, AND PAPERBOARD BOXES
67.1
DF
FILE FOLDER OR FILE ENVELOPE
{3}
67.4
.~ Including closure
DEFINITION
Classification: 229/67.4
Including Closure:
(under subclass 67.1) File folder or file envelope including structure intended to obstruct the passage of material into or out of the folder or envelope.