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发明名称
Tiefbohrvorrichtung, Tiefbohrpumpenvorrichtung und Verwendung eines hydrodynamischen Retarders zur Kompensation der vom Antriebssystem ausgelösten Rückstellmomente
摘要
申请公布号
DE59712022(D1)
申请公布日期
2004.11.25
申请号
DE19975012022
申请日期
1997.07.09
申请人
VOITH TURBO GMBH & CO. KG
发明人
FECHT, ANDREAS;HOELLER, HEINZ;WEBER, WOLFGANG
分类号
E21B43/12;(IPC1-7):E21B43/12
主分类号
E21B43/12
代理机构
代理人
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地址
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