for conducting smoke or fumes originating from various locations to the outside, e.g. in locomotive sheds, in garages

Full Title

Devices for conducting smoke or fumes, e.g. flues (chimney stacks E04H12/28; removing cooking fumes from domestic stoves or ranges F24C15/20 ) > for conducting smoke or fumes originating from various locations to the outside, e.g. in locomotive sheds, in garages