DIFF Subgroup
B22D 27/09 by using pressure
Introduced: January 1980
Full Title
Full titles differ between systems:
IPC:
Treating the metal in the mould while it is molten or ductile > by using pressure
CPC:
Treating the metal in the mould while it is molten or ductile (B22D7/12, B22D11/10, B22D43/00 take precedence); > by using pressure
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
IPC defines codes here since 1980.
Child Classifications
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