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发明名称
ROLLER-BIT HOLE CALIBRATOR
摘要
申请公布号
SU1373785(A1)
申请公布日期
1988.02.15
申请号
SU19864105103
申请日期
1986.07.28
申请人
VNII BUROVOJ TEKHNIKI
发明人
BARABASHKIN IGOR I,SU;MESSER ALEKSEJ G,SU;PERLOV GRIGORIJ F,SU
分类号
E21B10/26
主分类号
E21B10/26
代理机构
代理人
主权项
地址
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