CPC Subgroup
F27B 7/18 the means being movable within the drum
Full Title
Rotary-drum furnaces, i.e. horizontal or slightly inclined > with means for agitating or moving the charge > the means being movable within the drum
F27B 7/18 Rotary-drum furnaces, i.e. horizontal or slightly inclined > with means for agitating or moving the charge > the means being movable within the drum