DIFF Subgroup
C22B 19/30 from metallic residues or scraps
Introduced: September 1968
Full Title
Obtaining zinc or zinc oxide > from metallic residues or scraps
No child classifications to compare. This is a leaf node in both IPC and CPC.
C22B 19/30 Introduced: September 1968
Obtaining zinc or zinc oxide > from metallic residues or scraps
No child classifications to compare. This is a leaf node in both IPC and CPC.