DIFF Main Group
F23L 17/00 Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
Introduced: September 1968
Of 3 combined children, 2 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
Navigate with arrow keys, Enter to open
- F23L 17/02 Tops for chimneys or ventilating shafts; Terminals for flues IPC+CPC Available in IPC and CPC
- F23L 17/16 Induction apparatus, e.g. steam jet, acting on combustion products beyond the fire IPC+CPC Available in IPC and CPC