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发明名称
ROLLER BIT DRILL
摘要
申请公布号
SU1218058(A1)
申请公布日期
1986.03.15
申请号
SU19843808046
申请日期
1984.08.10
申请人
SREDNEAZIATSKIJ NII GEOLOGII MINERALNOGO SYRYA
发明人
ABDUMAZHITOV ABDUKHAMID A,SU;USTYUGOV EGOR V,SU;CHERKASOV VLADIMIR I,SU;BASHKATOV PAVEL V,SU
分类号
E21B10/22;(IPC1-7):E21B10/22
主分类号
E21B10/22
代理机构
代理人
主权项
地址
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