DIFF Subgroup
B21D 51/06 folded objects
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Making hollow objects > characterised by the structure of the objects > folded objects
CPC:
Making hollow objects (from thick-walled or non uniform tubes B21K21/00) > characterised by the structure of the objects > folded objects
No child classifications to compare. This is a leaf node in both IPC and CPC.