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发明名称
VERFAHREN UND VORRICHTUNG ZUM HYDRAULISCHEN DURCHDRINGEN EINES BOHRLOCHES
摘要
申请公布号
DE3813698(A1)
申请公布日期
1988.11.17
申请号
DE19883813698
申请日期
1988.04.22
申请人
SCHELLSTEDE, HERMAN JOSEPH, NEW IBERIA, LA., US;MACQUEEN, ROBERT W.;PETERS, ALAN D., HOUSTON, TEX., US
发明人
SCHELLSTEDE, HERMAN JOSEPH, NEW IBERIA, LA., US;MACQUEEN, ROBERT W.;PETERS, ALAN D., HOUSTON, TEX., US
分类号
E21B43/00;E21B7/06;E21B43/112;(IPC1-7):E21B29/08
主分类号
E21B43/00
代理机构
代理人
主权项
地址
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