DIFF Subgroup
B21B 21/04 Pilgrim-step feeding mechanisms (B21B21/06 takes precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Pilgrim-step feeding mechanisms
CPC: Pilgrim-step feeding mechanisms (B21B21/06 takes precedence)
Full Title
Full titles differ between systems:
IPC:
Pilgrim-step tube-rolling > Pilgrim-step feeding mechanisms
CPC:
Pilgrim-step tube-rolling > Pilgrim-step feeding mechanisms (B21B21/06 takes precedence)
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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