DIFF Subgroup
B21D 22/21 without fixing the border of the blank
Introduced: July 1974
Full Title
Full titles differ between systems:
IPC:
Shaping without cutting, by stamping, spinning, or deep-drawing > Deep-drawing > without fixing the border of the blank
CPC:
Shaping without cutting, by stamping, spinning, or deep-drawing (otherwise than using rigid devices or tools or yieldable or resilient pads B21D26/00) > Deep-drawing (special deep-drawing arrangements in, or in connection with, presses B21D24/00) > without fixing the border of the blank
No child classifications to compare. This is a leaf node in both IPC and CPC.