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发明名称
Purifying ferrous metals
摘要
申请公布号
US1925247(A)
申请公布日期
1933.09.05
申请号
US19310556613
申请日期
1931.08.12
申请人
HENNIG CHARLES T
发明人
HENNIG CHARLES T.
分类号
C22C1/00
主分类号
C22C1/00
代理机构
代理人
主权项
地址
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