DIFF Subgroup
F27B 7/161 Full Title
Rotary-drum furnaces, i.e. horizontal or slightly inclined > with means for agitating or moving the charge > the means being fixed relatively to the drum, (F27B7/04 takes precedence)
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Note: 1 CPC extensions are marked as secondary classification only.