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发明名称
ROLLER-CUTTER DRILLING BIT
摘要
申请公布号
RU1795071(C)
申请公布日期
1993.02.15
申请号
SU19904838601
申请日期
1990.06.12
申请人
IVANO-FRANKOVSKIJ I NEFTI GAZA
发明人
MARIK VASILIJ B,SU;EVCHUK LYUBOMIR V,SU;DROGOMIRETSKIJ YAROSLAV N,SU;KOSTETSKIJ IVAN P,SU;NAZAROV ALEKSANDR M,SU;TORGASHOV ALEKSANDR V,SU
分类号
E21B10/18
主分类号
E21B10/18
代理机构
代理人
主权项
地址
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