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发明名称
Process of debismuthizing lead
摘要
申请公布号
US1853540(A)
申请公布日期
1932.04.12
申请号
US19300440160
申请日期
1930.03.29
申请人
AMERICAN SMELTING AND REFINING COMPANY
发明人
BETTERTON JESSE OATMAN
分类号
C22B13/06;C22B13/08
主分类号
C22B13/06
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代理人
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