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发明名称
Borehullutstyr med et ledningsrör og en utvidbar innretning
摘要
申请公布号
NO20012189(D0)
申请公布日期
2001.05.03
申请号
NO20010002189
申请日期
2001.05.03
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV
发明人
HEIJNEN, WILHELMUS HUBERTUS PAULUS MARIA
分类号
E21B23/01;E21B23/02;E21B33/12;E21B41/00;E21B43/10;(IPC1-7):E21B
主分类号
E21B23/01
代理机构
代理人
主权项
地址
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