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发明名称
Preparation of silica gel
摘要
申请公布号
US2475253(A)
申请公布日期
1949.07.05
申请号
US19460711827
申请日期
1946.11.23
申请人
STANDARD OIL DEVELOPMENT COMPANY
发明人
PIERCE JERRY A.
分类号
B01J21/00;B01J21/08;C01B33/154
主分类号
B01J21/00
代理机构
代理人
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