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发明名称
ROTARY BIT BEARING
摘要
申请公布号
SU994673(A1)
申请公布日期
1983.02.07
申请号
SU19803212964
申请日期
1980.10.20
申请人
LVOVSKIJ POLT I IM.LENINSKOGO KOMSOMOLA
发明人
POVIDAJLO VLADIMIR A,SU;RYMAR ALEKSANDR M,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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