US PATENT SUBCLASS 53 / 439
.~.~.~.~ By simultaneously conveying and compressing

Current as of: June, 1999
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53 /   HD   PACKAGE MAKING

396  DF  METHODS {22}
428  DF  .~ With contents treating {7}
436  DF  .~.~ Compacting or stretching {2}
438  DF  .~.~.~ Before association with cover material {1}
439.~.~.~.~ By simultaneously conveying and compressing

DEFINITION

Classification: 53/439

By simultaneously conveying and compressing:

(under subclass 438) Methods for crowding the said contents into a smaller volume by conveying and constricting the contents concurrently.

SEE OR SEARCH THIS CLASS, SUBCLASS:

530, for corresponding apparatus.