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发明名称
METHOD FOR REFINING TUNGSTEN
摘要
申请公布号
JPH0428830(A)
申请公布日期
1992.01.31
申请号
JP19900136661
申请日期
1990.05.24
申请人
MITSUBISHI ELECTRIC CORP
发明人
KUSAKABE KENJI
分类号
C22B9/00;C22B34/36
主分类号
C22B9/00
代理机构
代理人
主权项
地址
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