DIFF Subgroup
B21D 19/02 by continuously-acting tools moving along the edge (edge-curling B21D19/12)
Introduced: September 1968
Title
Titles differ between systems:
IPC: by continuously-acting tools moving along the edge
CPC: by continuously-acting tools moving along the edge (edge-curling B21D19/12)
Full Title
Full titles differ between systems:
IPC:
Flanging or other edge treatment, e.g. of tubes > by continuously-acting tools moving along the edge
CPC:
Flanging or other edge treatment, e.g. of tubes (connecting by making use of folds B21D39/00; flaring-out tube ends B21D41/02) > by continuously-acting tools moving along the edge (edge-curling B21D19/12)
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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