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经营范围
发明名称
Well screen having a protective frame for a horizontal or high-angle well.
摘要
申请公布号
EP0527426(B1)
申请公布日期
1995.07.19
申请号
EP19920113323
申请日期
1992.08.05
申请人
NAGAOKA INTERNATIONAL CORPORATION
发明人
NAGAOKA, TADAYOSHI, NAGAOKA INTERNATIONAL CORP.
分类号
E21B43/10;B01D29/15;E21B43/08;(IPC1-7):E21B43/08
主分类号
E21B43/10
代理机构
代理人
主权项
地址
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