US PATENT SUBCLASS 493 / 311
.~ Collapsing

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

309  DF  CONTAINER OR TUBE ERECTING, OPENING, OR COLLAPSING {5}
311.~ Collapsing

DEFINITION

Classification: 493/311

Collapsing:

(under subclass 309) Method or apparatus including repositioning the walls of a previously formed receptacle or hollow cylinder to make the interior enclosed space smaller.