US PATENT SUBCLASS 53 / 512
.~.~ With preformed bag

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

111 R  DF  WITH CONTENTS TREATING {4}
510  DF  .~ Vacuum or inert atmosphere {2}
512.~.~ With preformed bag

DEFINITION

Classification: 53/512

With preformed bag:

(under subclass 510) Apparatus in which the cover for the contents being treated comprises a prefabricated pouch-like receptacle of flexible material.