DIFF Subgroup
B21C 3/08 with section defined by rollers, balls, or the like
Introduced: September 1968
Full Title
Profiling tools for metal drawing; Combinations of dies and mandrels for metal drawing > Dies; Selection of material therefor; Cleaning thereof > with section defined by rollers, balls, or the like
No child classifications to compare. This is a leaf node in both IPC and CPC.