with heads

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Making machine elements > bolts, studs, or the like > with heads

CPC:

Making machine elements > bolts, studs, or the like (making screw-thread B21K1/56; making U-bolts B21K1/74) > with heads

Of 4 combined children, 2 exist in both systems.

2 codes are CPC-only extensions.

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B21K 1/463 CPC only CPC only
B21K 1/466 CPC only CPC only
B21K 1/48 Machines working with hammers, e.g. beating in a radial direction, for forming heads IPC+CPC Available in IPC and CPC
B21K 1/50 Trimming or shearing formed heads, e.g. working with dies IPC+CPC Available in IPC and CPC

Class B21,2013–2023, worldwide · Source: EPO PATSTAT

Class B21,2013–2023, worldwide · Source: EPO PATSTAT