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发明名称
Composition or admixture for concrete and the process of incorporating it therein
摘要
申请公布号
US2393597(A)
申请公布日期
1946.01.29
申请号
US19390305550
申请日期
1939.11.21
申请人
DRUMMOND JOHN V
发明人
DRUMMOND JOHN V.
分类号
C04B28/26
主分类号
C04B28/26
代理机构
代理人
主权项
地址
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