US PATENT SUBCLASS 222 / 332
.~ With vent passage for movable trap chamber

Current as of: June, 1999
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222 /   HD   DISPENSING

251  DF  WITH DISCHARGE ASSISTANT (E.G., IMPELLER, PUMP, CONVEYER, MOVABLE TRAP CHAMBER, ETC.) {30}
332.~ With vent passage for movable trap chamber

DEFINITION

Classification: 222/332

(under subclass 251) Dispensers in which there is a vent passage for a movable trap chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

478+, for miscellaneous dispensers with vent passages, and see the notes thereto for other dispensers with vent passages.