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发明名称
Treatment of siliceous materials
摘要
申请公布号
US1973211(A)
申请公布日期
1934.09.11
申请号
US19310523946
申请日期
1931.03.19
申请人
PETER SPENCE & SONS, LIMITED
发明人
KIRKHAM ALFRED
分类号
C01B33/10;C01B33/18;C01G23/047;C22B34/12
主分类号
C01B33/10
代理机构
代理人
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