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发明名称
APPARATUS FOR MONITORING A PARAMETER IN A WELL
摘要
申请公布号
SG25091(G)
申请公布日期
1991.06.21
申请号
SG19910000250
申请日期
1991.04.05
申请人
OTIS ENGINEERING CORP.
发明人
分类号
E21B17/00;E21B23/03;E21B47/00;E21B47/06;H01R13/523;(IPC1-7):E21B47/06
主分类号
E21B17/00
代理机构
代理人
主权项
地址
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