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经营范围
发明名称
DUCTILE CAST IRON
摘要
申请公布号
CA528601(A)
申请公布日期
1956.07.31
申请号
CAD528601
申请日期
申请人
UNION CARBIDE CANADA LIMITED
发明人
WALTER CRAFTS;JOHN F. COLLINS
分类号
主分类号
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代理人
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