DIFF Main Group
C03B 3/00 Charging the melting furnaces
Introduced: September 1968
Of 2 combined children, 1 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 1990.
Child Classifications
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- C03B 3/02 combined with preheating, premelting or pretreating the glass-making ingredients, pellets or cullet since 1990 +2 CPC IPC+CPC Available in IPC and CPC