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发明名称
Tuyau en béton à armature précontrainte et procédé pour sa fabrication
摘要
申请公布号
FR1171548(A)
申请公布日期
1959.01.27
申请号
FRD1171548
申请日期
1957.01.24
申请人
发明人
SCHJODT ROLF
分类号
B28B21/62;B28B21/64;(IPC1-7):F06L/
主分类号
B28B21/62
代理机构
代理人
主权项
地址
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