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发明名称
VERFAHREN ZUM BOHREN VON DECKGEBIRGE, VERROHRUNGSSCHUH UND VERROHRUNG FÜR DIESE METHODE UND KUPPLUNGSELEMENTE FÜR DIE VERROHRUNG
摘要
申请公布号
DE69319421(D1)
申请公布日期
1998.08.06
申请号
DE1993619421
申请日期
1993.02.25
申请人
EDMAN, KNUT OESTEN, TYRESOE, SE
发明人
EDMAN, KNUT OESTEN, TYRESOE, SE
分类号
E21B10/40;E21B7/20;E21B17/00;E21B17/042;E21B17/14;F16L15/04;F16L47/24;(IPC1-7):E21B7/20;F16L13/007
主分类号
E21B10/40
代理机构
代理人
主权项
地址
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