(under subclass 50) Subject matter combined with forging or shaping of the workpiece.
SEE OR SEARCH THIS CLASS, SUBCLASS:
51+, for this subject matter where the workpiece is chain.
56+, for this subject matter where the workpiece is wire, rod or bar.
59.1+, for this subject matter where the workpiece is a tube.
68+, for this subject matter where the shaping is cutting. 78.01+, for this subject matter where the workpiece is bonded to another by application of pressure while heated.
SEE OR SEARCH CLASS
72, Metal Deforming, appropriate subclasses for plastic metal shaping not involving significant electric heating.