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发明名称
DRILLING TOOL
摘要
申请公布号
SU1127967(A1)
申请公布日期
1984.12.07
申请号
SU19813233347
申请日期
1981.01.07
申请人
INST GORNOGO DELA SEVERA YAKUTSKOGO FILIALA SO AN SSSR
发明人
ARTSIMOVICH GERMAN V,SU;KOGAN DAVID I,SU;FEDOROV LAZAR N,SU
分类号
E21B10/04;(IPC1-7):E21B10/04
主分类号
E21B10/04
代理机构
代理人
主权项
地址
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