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发明名称
Method of making prestressed structural member
摘要
申请公布号
US2887762(A)
申请公布日期
1959.05.26
申请号
US19540468838
申请日期
1954.11.15
申请人
THE PRELOAD COMPANY, INC.
发明人
DOBELL CURZON
分类号
E04C3/04;E04C3/10
主分类号
E04C3/04
代理机构
代理人
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