US PATENT SUBCLASS 222 / 422
.~ With valve

Current as of: June, 1999
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222 /   HD   DISPENSING

420  DF  DROP FORMERS {2}
422.~ With valve

DEFINITION

Classification: 222/422

(under subclass 420) Dispensers utilizing valves.

(1) Note. Mere openings adapted to be closed by the finger are not considered valves.