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发明名称
FREMGANGSMAATE VED AVVIKSBORING.
摘要
申请公布号
NO155354(B)
申请公布日期
1986.12.08
申请号
NO19800000884
申请日期
1980.03.26
申请人
MOBIL OIL CORP
发明人
DELLINGER, THOMAS BAYNE
分类号
E21B7/04;E21B17/10;E21B21/00;E21B31/03;(IPC1-7):E21B7/06
主分类号
E21B7/04
代理机构
代理人
主权项
地址
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