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发明名称
Improvements in or relating to methods of stressing concrete
摘要
申请公布号
GB709521(A)
申请公布日期
1954.05.26
申请号
GB19510009733
申请日期
1951.04.26
申请人
I-CHANG CHU
发明人
分类号
E04G21/12
主分类号
E04G21/12
代理机构
代理人
主权项
地址
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