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发明名称
TRICONE BORING BIT
摘要
申请公布号
SU1691497(A1)
申请公布日期
1991.11.15
申请号
SU19884433084
申请日期
1988.05.30
申请人
PROIZV OB "GROZNEFT"
发明人
KURUMOV LORSA S,SU;IZMAJLOV KHADZHI-MURAD S,SU;AGOSHASHVILI TARIEL G,SU;GRYAKOLOV ANDREJ P,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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