CPC Subgroup
F23L 17/14 Draining devices
Full Title
Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues > Tops for chimneys or ventilating shafts; Terminals for flues > Draining devices
F23L 17/14 Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues > Tops for chimneys or ventilating shafts; Terminals for flues > Draining devices