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发明名称
Verfahren,sowie Vortriebs- und Verlegeschild,zum Ausbauen eines untertaegigen Hohlraumes von kreisfoermigem Querschnitt
摘要
申请公布号
DE1759847(A1)
申请公布日期
1970.10.29
申请号
DE19681759847
申请日期
1968.06.14
申请人
A.DRESSLER OHG
发明人
分类号
E21D9/06
主分类号
E21D9/06
代理机构
代理人
主权项
地址
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