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发明名称
Procédé de fabrication pour moulages de pièces creuses mais avec noyaux perdus incorporés dans les pièces coulées
摘要
申请公布号
FR937292(A)
申请公布日期
1948.08.12
申请号
FRD937292
申请日期
1946.12.10
申请人
发明人
BATISSE ANDRE
分类号
B22C9/04
主分类号
B22C9/04
代理机构
代理人
主权项
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