DIFF Subgroup
B24B 19/001 Full Title
Single-purpose machines or devices for particular grinding operations not covered by any other main group (tapering, chamfering, or relief cutting of taps or reamers B24B3/20, B24B3/22, grinding screw threads B23G)
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.