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经营范围
发明名称
DEVICE RETRIEVING METAL OBJECTS DROPPED IN OIL WELLS
摘要
申请公布号
RO113752(B)
申请公布日期
1998.10.30
申请号
RO19970000325
申请日期
1997.02.18
申请人
AVRAM LAZAR, PLOIESTI;GUDIN VALERIU, PLOIESTI;JELESCU ALEXANDRU, MEDGIDIA
发明人
AVRAM LAZAR;GUDIN VALERIU;JELESCU ALEXANDRU
分类号
E21B31/06;(IPC1-7):E21B31/06
主分类号
E21B31/06
代理机构
代理人
主权项
地址
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