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经营范围
发明名称
Siliceous body
摘要
申请公布号
US2247270(A)
申请公布日期
1941.06.24
申请号
US19380224308
申请日期
1938.08.11
申请人
NORBERT S. GARBISCH
发明人
BAIR GEORGE J.
分类号
C04B35/14;F27B9/38
主分类号
C04B35/14
代理机构
代理人
主权项
地址
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