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发明名称
SINGLE-CONE DRILL BIT
摘要
申请公布号
RU1803516(C)
申请公布日期
1993.03.23
申请号
SU19894721162
申请日期
1989.07.19
申请人
SREDNEAZIATSKIJ NII GEOLOGII MINERALNOGO SYRYA
发明人
CHERKASOV VLADIMIR I,SU;KOLUGAR ALEKSANDR G,SU;KUZNETSOV VITALIJ N,SU;KOLOTAEVA ELENA G,SU
分类号
E21B10/16
主分类号
E21B10/16
代理机构
代理人
主权项
地址
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