DIFF Subgroup
C21D 1/84 Controlled slow cooling (cooling-beds for metal rolling B21B43/00)
Introduced: January 1980
Title
Titles differ between systems:
IPC: Controlled slow cooling
CPC: Controlled slow cooling (cooling-beds for metal rolling B21B43/00)
Full Title
Full titles differ between systems:
IPC:
General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering > Controlled slow cooling
CPC:
General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering > Controlled slow cooling (cooling-beds for metal rolling B21B43/00)
No child classifications to compare. This is a leaf node in both IPC and CPC.