DIFF Subgroup
B21H 1/20 rolled longitudinally
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Making articles shaped as bodies of revolution > cylinders, e.g. rolled transversely > rolled longitudinally
CPC:
Making articles shaped as bodies of revolution (rolling tubes B21B17/00 - B21B25/00) > cylinders, e.g. rolled transversely > rolled longitudinally
No child classifications to compare. This is a leaf node in both IPC and CPC.