US PATENT SUBCLASS 53 / 492
.~ Opening only
Current as of: June, 1999
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DEFINITION
Classification: 53/492
Opening only:
(under subclass 396) Methods for (a) expanding or erecting a formed collapsed receptacle into a contents-receiving form or for (b) manipulating a portion of a cover or covering material to permit filling or other operation.
(1) Note. Included here are methods of shifting or removing a closure or engaging a flap so as to uncover an aperture of a receptacle to permit filling, emptying, or treatment of the receptacle or contents.
SEE OR SEARCH THIS CLASS, SUBCLASS:
50, for apparatus for opening a filled package and inserting additional contents.
381.1+, for corresponding apparatus.
457, for methods of opening or erecting receptacles and subsequent filling.
468, for methods of opening, filling, and closing receptacles.
564+, for apparatus for opening and subsequently filling collapsed receptacles.
