| 366 / | HD | AGITATING |
| 241 | DF | STIRRER WITHIN STATIONARY MIXING CHAMBER {10} |
| 279 | DF | .~ Rotatable stirrer {15} |
| 325.1 | DF | .~.~ Relatively fixed plural elements {14} |
| 328.2 | DF | .~.~.~ Apertured element {1} |
| 328.3 | | .~.~.~.~ Noncircular aperture {1} |
| 328.4 | DF | .~.~.~.~.~> Square aperture |