119 / | HD | ANIMAL HUSBANDRY |
650 | DF | ANTIVERMIN TREATING OR CLEANING {6} |
652 | DF | .~ Means engaging animal directly; e.g., daubing or rubbing means {6} |
656 | .~.~ Having animal actuated treatment supply {3} | |
657 | DF | .~.~.~> With food trough or attractant means |
658 | DF | .~.~.~> Animal actuated valve |
659 | DF | .~.~.~> Animal actuated transfer means moving out of reservoir |