Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form (making helically seamed tubing B21C37/12)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form

CPC: Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form (making helically seamed tubing B21C37/12)

Full Title

Full titles differ between systems:

IPC:

Bending not restricted to forms of material mentioned in only one of groups , ,; Bending not provided for in groups; Twisting > Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form

CPC:

Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00 (corrugating or bending into wave form B21D13/00, B21D15/00; flanging B21D19/00); Twisting > Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form (making helically seamed tubing B21C37/12)

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

Child Classifications

Navigate with arrow keys, Enter to open

B21D 11/07 Making serpentine-shaped articles by bending essentially in one plane IPC+CPC Available in IPC and CPC