Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Main Group
B21F 37/00

Manufacture of rings from wire

Introduced: September 1968

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

Navigate with arrow keys, Enter to open

  • B21F 37/02 of resilient rings, e.g. key-rings IPC+CPC Available in IPC and CPC
  • B21F 37/04 of washers (B21F37/02 takes precedence) IPC+CPC Available in IPC and CPC