(under subclass 9) Device wherein at least two of the selectively used work holders are work-stop abutments*, and the work is disclosed as being supported against the force of gravity on the same support surface while in contact with either of the work-stop abutments.
(1) Note. Since the work-stop abutment is considered to be a work holder for this class, two or more such abutments constitute plural holders. The selective use of said plural abutments thus effecting placement in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315+, for other patents having a work-stop abutment.
