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经营范围
发明名称
DEVICE FOR DIRECTINALLY DRILLING WELLS
摘要
申请公布号
SU1006692(A2)
申请公布日期
1983.03.23
申请号
SU19813318362
申请日期
1981.04.24
申请人
IVANO-FRANKOVSKIJ I NEFTI GAZA
发明人
SEMAK GRIGORIJ G,SU;GRINKEVICH NIKOLAJ O,SU
分类号
E21B7/08;(IPC1-7):E21B7/08
主分类号
E21B7/08
代理机构
代理人
主权项
地址
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