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发明名称
Concrete construction
摘要
申请公布号
US2111577(A)
申请公布日期
1938.03.22
申请号
US19330699161
申请日期
1933.11.22
申请人
THOMAS LEONARD H
发明人
THOMAS LEONARD H.
分类号
B28B7/16
主分类号
B28B7/16
代理机构
代理人
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