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发明名称
Simplicity closed wells management unit
摘要
申请公布号
KR20110004150(U)
申请公布日期
2011.04.27
申请号
KR20090013670U
申请日期
2009.10.20
申请人
发明人
分类号
E21B33/02;E03B3/15
主分类号
E21B33/02
代理机构
代理人
主权项
地址
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