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经营范围
发明名称
Slag formation and reduction in lead softening
摘要
申请公布号
US1950387(A)
申请公布日期
1934.03.13
申请号
US19320587756
申请日期
1932.01.20
申请人
AMERICAN SMELTING & REFINING COMPANY
发明人
BETTERTON JESSE OATMAN;HANSON CHARLES W.
分类号
C22B13/06
主分类号
C22B13/06
代理机构
代理人
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地址
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