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发明名称
Verfahren zur Herstellung einer verrohrten Gewinnungsbohrung
摘要
申请公布号
DE19535906(B4)
申请公布日期
2006.02.09
申请号
DE19951035906
申请日期
1995.09.27
申请人
PRECISION ENERGY SERVICES GMBH;SPERBER, AXEL
发明人
KERK, THOMAS;SPERBER, AXEL
分类号
E21B7/20;E21B43/08;E21B43/10
主分类号
E21B7/20
代理机构
代理人
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地址
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