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经营范围
发明名称
Niobium-base alloys
摘要
申请公布号
GB869630(A)
申请公布日期
1961.05.31
申请号
GB19570035570
申请日期
1957.11.14
申请人
E. I. DU PONT DE NEMOURS AND COMPANY
发明人
分类号
C22C27/02
主分类号
C22C27/02
代理机构
代理人
主权项
地址
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