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发明名称
CONDUIT SOUTERRAIN
摘要
申请公布号
FR2723116(B1)
申请公布日期
1997.03.14
申请号
FR19940009607
申请日期
1994.07.28
申请人
PREFAC SA
发明人
FERREIRA ALBERTO
分类号
E02D29/05;(IPC1-7):E02D29/05
主分类号
E02D29/05
代理机构
代理人
主权项
地址
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