B21K 21/16 Remodelling hollow bodies with respect to the shape of the cross-section (remodelling end portions only B21K21/12)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Remodelling hollow bodies with respect to the shape of the cross-section
CPC: Remodelling hollow bodies with respect to the shape of the cross-section (remodelling end portions only B21K21/12)
Full Title
Full titles differ between systems:
Making hollow articles not covered by any single one of groups > Remodelling hollow bodies with respect to the shape of the cross-section
Making hollow articles not covered by a single preceding sub-group (essentially from sheet-metal or uniform thin-walled tubes B21D, e.g. B21D41/00, B21D51/00) > Remodelling hollow bodies with respect to the shape of the cross-section (remodelling end portions only B21K21/12)
No child classifications to compare. This is a leaf node in both IPC and CPC.