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发明名称
Method of pre-stressing reinforced concrete structural elements
摘要
申请公布号
US2751660(A)
申请公布日期
1956.06.26
申请号
US19520268383
申请日期
1952.01.26
申请人
WALTER NAKONZ
发明人
NAKONZ WALTER
分类号
E04C5/12
主分类号
E04C5/12
代理机构
代理人
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