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发明名称
VORTRIEBSROHR FUER IM UNTERIRDISCHEN VORTRIEB HERGESTELLTE TUNNEL
摘要
申请公布号
DE3914788(A1)
申请公布日期
1990.11.08
申请号
DE19893914788
申请日期
1989.05.05
申请人
THYSSEN INDUSTRIE AG, 4300 ESSEN, DE
发明人
RAMMELSBERG, JUERGEN, DR.-ING., 4690 HERNE, DE;KOENIG, WILLI, ING.(GRAD.), 4650 GELSENKIRCHEN, DE
分类号
E21B17/08
主分类号
E21B17/08
代理机构
代理人
主权项
地址
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