DIFF Main Group
B21D 41/00 Application of procedures in order to alter the diameter of tube ends (B21D39/00 takes precedence )
Introduced: September 1968
Title
Titles differ between systems:
IPC: Application of procedures in order to alter the diameter of tube ends
CPC: Application of procedures in order to alter the diameter of tube ends (B21D39/00 takes precedence )
Full Title
Full titles differ between systems:
IPC:
Application of procedures in order to alter the diameter of tube ends
CPC:
Application of procedures in order to alter the diameter of tube ends (B21D39/00 takes precedence )
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
Child Classifications
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