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发明名称
FREMGANGSMAATE VED UTVINNING AV PETROLEUM FRA ET UNDERJORDISK RESERVOAR.
摘要
申请公布号
NO154644(B)
申请公布日期
1986.08.11
申请号
NO19800001664
申请日期
1980.06.03
申请人
MAGNA CORPORATION
发明人
BLAIR, CHARLES M. JR.
分类号
E21B;E21B43/20;E21B43/22;(IPC1-7):E21B43/20
主分类号
E21B
代理机构
代理人
主权项
地址
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