(under subclass 712) Subject matter for classifying, separating, or grouping animals (i.e., sorting) according to size or kind of animal.
(1) Note. The sorting may be done manually, automatically, or by the animal itself, such as by use of a barrier with an opening that only a small animal can freely pass while leaving a larger animal confined.
SEE OR SEARCH CLASS
209, Classifying, Separating, and Assorting Solids, appropriate subclasses, for sorting in general.