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经营范围
发明名称
Particulate silica and method of production
摘要
申请公布号
US3208953(A)
申请公布日期
1965.09.28
申请号
US19620177219
申请日期
1962.03.05
申请人
THE PURE OIL COMPANY
发明人
KLASS DONALD L.;MARTINEK THOMAS W.;O'MALLEY CHARLES T.
分类号
C01B33/113
主分类号
C01B33/113
代理机构
代理人
主权项
地址
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