DIFF Subgroup
B21B 13/02 with axes of rolls arranged horizontally
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories > with axes of rolls arranged horizontally
CPC:
Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories (B21B17/00 - B21B23/00 take precedence) > with axes of rolls arranged horizontally
CPC subdivides this area 6x more granularly than IPC with 5 additional codes.
5 codes are CPC-only extensions.
Note: 4 CPC extensions are marked as secondary classification only.
Child Classifications
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