DIFF Main Group
B21D 17/00 Forming single grooves in sheet metal or tubular or hollow articles
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
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- B21D 17/02 by pressing (grooving or notching of bolts, studs, or the like B21K1/54) +1 CPC IPC+CPC Available in IPC and CPC