DIFF Subgroup
F23L 17/10 wherein the top moves as a whole
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 > wherein the top moves as a whole
No child classifications to compare. This is a leaf node in both IPC and CPC.