(under subclass 281) Stationary sifters the material-receiving surfaces of which are concave or convex, having reciprocating agitators associated therewith.
SEE OR SEARCH THIS CLASS, SUBCLASS:
357, for stationary horizontal or inclined plane sifter with reciprocating agitator.
SEE OR SEARCH CLASS
99, Foods and Beverages: Apparatus
528, and 605+ for perforated sifters in a grain huller, including agitators and stationary sifters.
460, Crop Threshing or Separating, 85+, for rake type straw carriers for grain separators.
