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经营范围
发明名称
Purification or separation of metals
摘要
申请公布号
US1994358(A)
申请公布日期
1935.03.12
申请号
US19340732050
申请日期
1934.06.23
申请人
THE NEW JERSEY ZINC COMPANY
发明人
HOLSTEIN LEON S.;GINDER PHILIP M.
分类号
C22B19/16;C22B19/32
主分类号
C22B19/16
代理机构
代理人
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地址
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