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经营范围
发明名称
Silica extrusions
摘要
申请公布号
US2879546(A)
申请公布日期
1959.03.31
申请号
US19550531298
申请日期
1955.08.29
申请人
W. R. GRACE & CO.
发明人
HEMPHILL ADLEY W.
分类号
B01J21/08;C01B33/157
主分类号
B01J21/08
代理机构
代理人
主权项
地址
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