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发明名称
Method of producing chromium and niobium
摘要
申请公布号
US2848320(A)
申请公布日期
1958.08.19
申请号
US19570660029
申请日期
1957.05.20
申请人
NATIONAL RESEARCH CORPORATION
发明人
KELLER WAYNE H.;ZONIS IRWIN S.
分类号
C22B34/00;C22B34/24
主分类号
C22B34/00
代理机构
代理人
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地址
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