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经营范围
发明名称
FLUSHING ASSEMBLY OF DRILLING BIT
摘要
申请公布号
SU899824(A1)
申请公布日期
1982.01.23
申请号
SU19792828771
申请日期
1979.10.03
申请人
PANIN NIKOLAJ M,SU;KIRSANOV VALERIJ A,SU;MATVEEV GRIGORIJ,SU
发明人
PANIN NIKOLAJ M,SU;KIRSANOV VALERIJ A,SU;MATVEEV GRIGORIJ I,SU
分类号
E21B10/18;(IPC1-7):E21B10/18
主分类号
E21B10/18
代理机构
代理人
主权项
地址
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