(under subclass 518) Device including means to propel the grain through space against an element which does not form part of the propelling instrumentality.
SEE OR SEARCH THIS CLASS, SUBCLASS:
571, for impact-type nut crackers.
SEE OR SEARCH CLASS
241, Solid Material Comminution or Disintegration,
5, 39+, and 275 for corresponding comminuting processes and apparatus.