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发明名称
Lightweight mineral material
摘要
申请公布号
US2342574(A)
申请公布日期
1944.02.22
申请号
US19390298618
申请日期
1939.10.09
申请人
F. E. SCHUNDLER & CO., INC.
发明人
DENNING PAUL S.
分类号
C04B28/14
主分类号
C04B28/14
代理机构
代理人
主权项
地址
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