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经营范围
发明名称
Recovery of tungsten and copper scrap
摘要
申请公布号
US2776199(A)
申请公布日期
1957.01.01
申请号
US19530395209
申请日期
1953.11.30
申请人
FANSTEEL METALLURGICAL CORPORATION
发明人
VERDI COLUMBUS
分类号
C22B7/00;C22B15/00;C22B34/36
主分类号
C22B7/00
代理机构
代理人
主权项
地址
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