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发明名称
EJECTOR CORE DRILLING TOOL
摘要
申请公布号
SU1086116(A1)
申请公布日期
1984.04.15
申请号
SU19813234047
申请日期
1981.01.09
申请人
SEVERNOE MORSKOE N-PROIZV GEOLOGO-GEOFIZICHESKOE OB "SEVMORGEO"
发明人
GAVRILOV YURIJ P,SU;GAVRILOV PAVEL YU,SU;BEKANOV YURIJ F,SU
分类号
E21B21/00;E21B25/00;(IPC1-7):E21B21/00
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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