(under subclass 28) Method auxiliary to the abrading step and wherein the workpiece is altered in shape or to a particularly defined state, or there is claimed specific manipulative steps for accomplishing any alteration of state or shape.
(1) Note. The sole disclosure of "cleaning" is insufficient to define the critical work treatment.
SEE OR SEARCH THIS CLASS, SUBCLASS:
35, for work treatment auxiliary to a tumbling operation, and see the search notes thereunder.
