(under subclass 28) Method wherein a workpiece is subjected to at least two abrading operations which are relative to one another and occur either (a) concurrently, but over separately defined work surfaces, or (b) in sequence.
SEE OR SEARCH THIS CLASS, SUBCLASS:
34, for plural abrading operations in which one operation is tumbling.
37, for plural abrading operations in which one operation utilizes a fluent abradant.
