DIFF Subgroup
C21B 3/04 Recovery of by-products, e.g. slag
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
General features in the manufacture of pig-iron > Recovery of by-products, e.g. slag
CPC:
General features in the manufacture of pig-iron (mixers for pig-iron C21C1/06) > Recovery of by-products, e.g. slag
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- C21B 3/06 Treatment of liquid slag (slag wool C03B; slag stones C04B) IPC+CPC Available in IPC and CPC