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发明名称
FLUIDSTROEMNINGSSTRUPEVENTIL FOR ET BOREHULLS KJERNEBORVERKTOEY
摘要
申请公布号
NO810582(A)
申请公布日期
1981.02.19
申请号
NO19810000582
申请日期
1981.02.19
申请人
STANDARD OIL CO,
发明人
MOUNT, HOUSTON B.,
分类号
E21B7/06;E21B44/00;E21B49/06;(IPC1-7):E21B/
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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