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PCE
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DIFF Subgroup
B21F 3/02

helically

Introduced: September 1968

Full Title

Coiling wire into particular forms > helically

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

Child Classifications

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  • B21F 3/027 with extended ends formed in a special shape, e.g. for clothes-pegs IPC+CPC Available in IPC and CPC
  • B21F 3/04 externally on a mandrel or the like IPC+CPC Available in IPC and CPC
  • B21F 3/06 internally on a hollow form IPC+CPC Available in IPC and CPC