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发明名称
EARTH-DRILLING DEVICE
摘要
申请公布号
SU794149(A1)
申请公布日期
1981.01.07
申请号
SU19762393317
申请日期
1976.06.14
申请人
MO I NEFTEKHIMICHESKOJ GAZOVOJ PROMY IM. I.M.GUBKINA
发明人
BUYANOVSKIJ ILYA N,SU;DASHEVSKIJ ANATOLIJ S,SU;LVOV SERGEJ L,SU;ROZENBERG GENRIKH D,SU;MARON VENIAMIN ,SU;SIMONOV VLADIMIR V,SU;BREVDO GRIGORIJ D,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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