CPC Subgroup
F27B 7/10 internally heated, e.g. by means of passages in the wall
Full Title
Rotary-drum furnaces, i.e. horizontal or slightly inclined > internally heated, e.g. by means of passages in the wall
F27B 7/10 Rotary-drum furnaces, i.e. horizontal or slightly inclined > internally heated, e.g. by means of passages in the wall