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发明名称
Frakoplingsenhet til bruk i et borehull
摘要
申请公布号
NO20040716(A)
申请公布日期
2004.02.18
申请号
NO20040000716
申请日期
2004.02.18
申请人
WEATHERFORD/LAMB INC
发明人
MARSHALL GREGORY
分类号
E21B17/06;E21B31/00;(IPC1-7):E21B
主分类号
E21B17/06
代理机构
代理人
主权项
地址
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