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发明名称
Verfahren zum Richtungsbohren
摘要
申请公布号
DE19612902(A1)
申请公布日期
1997.10.02
申请号
DE19961012902
申请日期
1996.03.30
申请人
TRACTO-TECHNIK PAUL SCHMIDT SPEZIALMASCHINEN, 57368 LENNESTADT, DE
发明人
PUETTMANN, FRANZ-JOSEF, 57368 LENNESTADT, DE;HESSE, ALFONS, DIPL.-ING., 57368 LENNESTADT, DE
分类号
E21B7/00;E21B7/06;E21B17/18;(IPC1-7):E21B7/20
主分类号
E21B7/00
代理机构
代理人
主权项
地址
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