222 / | HD | DISPENSING |
251 | DF | WITH DISCHARGE ASSISTANT (E.G., IMPELLER, PUMP, CONVEYER, MOVABLE TRAP CHAMBER, ETC.) {30} |
252 | DF | .~ Plural {9} |
256 | DF | .~.~ Follower combined with casing enclosed impeller {3} |
260 | .~.~.~ Follower and impeller coaxial or parallel and interconnected {1} | |
261 | DF | .~.~.~.~> Utilizing fluid pressure and/or motor |