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发明名称
Post-tensioning method for prestressing members
摘要
申请公布号
US3029490(A)
申请公布日期
1962.04.17
申请号
US19540468762
申请日期
1954.11.15
申请人
THE PRESCON CORPORATION
发明人
MIDDENDORF KARL H.
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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