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发明名称
Elektrisk ledningssystem for boreror
摘要
申请公布号
NO329260(B1)
申请公布日期
2010.09.20
申请号
NO20030000883
申请日期
2003.02.25
申请人
WEATHERFORD/LAMB INC
发明人
HEAD PHILIP
分类号
E21B17/02
主分类号
E21B17/02
代理机构
代理人
主权项
地址
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