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经营范围
发明名称
DUCTILE CAST IRON
摘要
申请公布号
PL132410(B1)
申请公布日期
1985.02.28
申请号
PL19790239524
申请日期
1979.09.07
申请人
发明人
分类号
C22C37/04;(IPC1-7):C22C37/04
主分类号
C22C37/04
代理机构
代理人
主权项
地址
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