(under the class definition) Subject matter including (a) a process involving the use of a synthetic resin or (b) an abrading material or composition including such synthetic resin.
SEE OR SEARCH CLASS
520, Synthetic Resins or Natural Rubbers, for synthetic resins or natural rubbers, and composition thereof.
(1) Note. For the purposes of this classification, the term "synthetic resin" has been interpreted as defined in Class 520.
