DIFF Subgroup
B21C 3/18 Making tools by operations not covered by a single other subclass; Repairing
Introduced: September 1968
Full Title
Profiling tools for metal drawing; Combinations of dies and mandrels for metal drawing > Making tools by operations not covered by a single other subclass; Repairing
No child classifications to compare. This is a leaf node in both IPC and CPC.