US PATENT SUBCLASS 493 / 921
.~.~ Having integrally formed insert

Current as of: June, 1999
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493 /   HD   MANUFACTURING CONTAINER OR TUBE FROM PAPER; OR OTHER MANUFACTURING FROM A SHEET OR WEB

916  DF  PLIABLE CONTAINER {12}
917  DF  .~ Envelope {6}
921.~.~ Having integrally formed insert

DEFINITION

Classification: 493/921

Having integrally formed insert:

(under subclass 917) Operation involving construction of a receptacle and a member inside the receptacle that is a part of the receptacle at the time of formation but is subsequently removed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

216, for similar operation including forming an envelope having an integral return envelope therein.