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发明名称
FREMGANGSMAATE OG INNRETNING FOR PERFORERING AV FORINGSROERI FLERE SONER.
摘要
申请公布号
NO884363(A)
申请公布日期
1989.04.03
申请号
NO19880004363
申请日期
1988.09.30
申请人
CONOCO INC. PATENT AND LICENSING DIVISION
发明人
SAVAGE, WILLIAM ARTHUR;KENDRICK, LARRY NEIL
分类号
E21B17/07;E21B43/116;(IPC1-7):E21B43/116
主分类号
E21B17/07
代理机构
代理人
主权项
地址
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