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经营范围
发明名称
Heat, rust, and acid resisting ferrous alloy
摘要
申请公布号
US1850953(A)
申请公布日期
1932.03.22
申请号
US19250038170
申请日期
1925.06.19
申请人
ARMSTRONG PERCY A E
发明人
ARMSTRONG PERCY A. E.
分类号
C22C38/18
主分类号
C22C38/18
代理机构
代理人
主权项
地址
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