DIFF Subgroup
B21D 17/02 by pressing (grooving or notching of bolts, studs, or the like B21K1/54)
Introduced: September 1968
Title
Titles differ between systems:
IPC: by pressing
CPC: by pressing (grooving or notching of bolts, studs, or the like B21K1/54)
Full Title
Full titles differ between systems:
IPC:
Forming single grooves in sheet metal or tubular or hollow articles > by pressing
CPC:
Forming single grooves in sheet metal or tubular or hollow articles > by pressing (grooving or notching of bolts, studs, or the like B21K1/54)
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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