DIFF Subgroup
B22C 9/04 Use of lost patterns
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Moulds or cores; Moulding processes > Sand moulds or like moulds for shaped castings > Use of lost patterns
CPC:
Moulds or cores (uniquely adapted to particular casting processes B22D); Moulding processes > Sand moulds or like moulds for shaped castings > Use of lost patterns
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Child Classifications
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