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发明名称
ROLLER BIT
摘要
申请公布号
SU1472617(A1)
申请公布日期
1989.04.15
申请号
SU19864136643
申请日期
1986.10.15
申请人
ABRAMSON MIKHAIL G,SU;POZDNYSHEV VYACHESLAV N,SU;POZDNYAKOV VIKTOR,SU;ZABURDAEV ALEKSANDR K,SU
发明人
ABRAMSON MIKHAIL G,SU;POZDNYSHEV VYACHESLAV N,SU;POZDNYAKOV VIKTOR I,SU;ZABURDAEV ALEKSANDR K,SU
分类号
E21B10/08
主分类号
E21B10/08
代理机构
代理人
主权项
地址
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