DIFF Subgroup
C21D 9/66 Tower-type furnaces
Introduced: September 1968
Full Title
Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor > for wires; for strips > Furnaces for treating strips or wire > Tower-type furnaces
No child classifications to compare. This is a leaf node in both IPC and CPC.