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发明名称
MEANS AND TECHNIQUES USEFUL IN PRESTRESSING CONCRETE STRUCTURES
摘要
申请公布号
CA901434(A)
申请公布日期
1972.05.30
申请号
CAD901434
申请日期
申请人
MAXIMILIAAN J. DYKMANS
发明人
MAXIMILIAAN J. DYKMANS
分类号
B21F17/00;E04G21/12;(IPC1-7):B21F17/00
主分类号
B21F17/00
代理机构
代理人
主权项
地址
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