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经营范围
发明名称
Cleaning and pickling of metals
摘要
申请公布号
US2425320(A)
申请公布日期
1947.08.12
申请号
US19420463133
申请日期
1942.10.23
申请人
KOPPERS COMPANY, INC.
发明人
HILL WILLIAM H.
分类号
C23G1/06
主分类号
C23G1/06
代理机构
代理人
主权项
地址
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