DIFF Subgroup
B21D 37/01 Selection of materials
Introduced: July 1974
Full Title
Tools as parts of machines covered by this subclass > Selection of materials
No child classifications to compare. This is a leaf node in both IPC and CPC.
B21D 37/01 Introduced: July 1974
Tools as parts of machines covered by this subclass > Selection of materials
No child classifications to compare. This is a leaf node in both IPC and CPC.