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发明名称
PURIFICATION OF SILICON DIOXIDE
摘要
申请公布号
JPH01108110(A)
申请公布日期
1989.04.25
申请号
JP19870264810
申请日期
1987.10.20
申请人
DOWA MINING CO LTD
发明人
OKADA SHUN;MATSUDA YOSHIKATSU
分类号
C01B33/12
主分类号
C01B33/12
代理机构
代理人
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地址
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