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发明名称
Process of making water-impervious concrete
摘要
申请公布号
US2491487(A)
申请公布日期
1949.12.20
申请号
US19450604095
申请日期
1945.07.09
申请人
FAULWETTER ROY C
发明人
FAULWETTER ROY C.
分类号
C04B24/26;C04B41/00
主分类号
C04B24/26
代理机构
代理人
主权项
地址
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