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发明名称
Method of producing ferrochrome
摘要
申请公布号
US1893109(A)
申请公布日期
1933.01.03
申请号
US19290398579
申请日期
1929.10.09
申请人
SIMPSON KENNETH M
发明人
SIMPSON KENNETH M.
分类号
C21C7/00
主分类号
C21C7/00
代理机构
代理人
主权项
地址
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