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发明名称
Siliceous material and method of producing the same
摘要
申请公布号
US1811531(A)
申请公布日期
1931.06.23
申请号
US19270231164
申请日期
1927.11.04
申请人
THE PERMUTIT COMPANY
发明人
BEHRMAN ABRAHAM SIDNEY
分类号
C01B33/46
主分类号
C01B33/46
代理机构
代理人
主权项
地址
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