US PATENT SUBCLASS 53 / 401
.~ With nonreactive packaging materials

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

396  DF  METHODS {22}
401.~ With nonreactive packaging materials

DEFINITION

Classification: 53/401

With nonreactive packaging materials:

(under subclass 396) Methods in which the cover is made of a particular material or is treated to prevent chemical reaction with the contents.