CPC Main Group
F23L 17/00 Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
3 direct subcodes
Child Classifications
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- F23L 17/02 Tops for chimneys or ventilating shafts; Terminals for flues
- F23L 17/16 Induction apparatus, e.g. steam jet, acting on combustion products beyond the fire