DIFF Subgroup
B22C 9/123 Full Title
Moulds or cores (uniquely adapted to particular casting processes B22D); Moulding processes > Treating moulds or cores, e.g. drying, hardening
B22C 9/123 Moulds or cores (uniquely adapted to particular casting processes B22D); Moulding processes > Treating moulds or cores, e.g. drying, hardening