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经营范围
发明名称
Recovery of zinc values
摘要
申请公布号
US2288405(A)
申请公布日期
1942.06.30
申请号
US19400317131
申请日期
1940.02.03
申请人
E. I. DU PONT DE NEMOURS & COMPANY
发明人
KEPFER RAYMOND J.
分类号
C01G9/04
主分类号
C01G9/04
代理机构
代理人
主权项
地址
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