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发明名称
Zinc metallurgy
摘要
申请公布号
US2219914(A)
申请公布日期
1940.10.29
申请号
US19380240956
申请日期
1938.11.17
申请人
AMERICAN SMELTING AND REFINING COMPANY
发明人
BETTERTON JESSE O.;PERKINS MELVILLE F.
分类号
C22B4/04;C22B19/04
主分类号
C22B4/04
代理机构
代理人
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地址
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