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经营范围
发明名称
BORING RAM FOR LAYING SERVICE LINES WITHOUT EXCAVATION
摘要
申请公布号
EP0356666(B1)
申请公布日期
1993.10.13
申请号
EP19890112633
申请日期
1989.07.11
申请人
SCHMIDT, PAUL, DIPL.-ING.
发明人
HESSE, ALFONS, DIPL.-ING.
分类号
E21B7/26;E21B4/14;E21B7/30
主分类号
E21B7/26
代理机构
代理人
主权项
地址
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