DIFF Subgroup
F23L 17/12 Devices for fastening the top or terminal to chimney, shaft, or flue
Introduced: September 1968
Full Title
Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues > Tops for chimneys or ventilating shafts; Terminals for flues > Devices for fastening the top or terminal to chimney, shaft, or flue
No child classifications to compare. This is a leaf node in both IPC and CPC.