Shaping by press-cutting; Perforating

Introduced: September 1968

Of 4 combined children, 2 exist in both systems.

2 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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B21D 28/002 +1 CPC CPC only CPC only
B21D 28/007 CPC only CPC only
B21D 28/02 Punching blanks or articles with or without obtaining scrap (cutting nails or pins from strips or sheet material B21G3/26); Notching IPC+CPC Available in IPC and CPC
B21D 28/24 Perforating, i.e. punching holes +2 CPC IPC+CPC Available in IPC and CPC