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发明名称
DEVICE FOR ROLLING CUTTER BIT BEARING SLUDGE PROTECTING AND LUBRICATING
摘要
申请公布号
SU1761936(A1)
申请公布日期
1992.09.15
申请号
SU19904820104
申请日期
1990.02.28
申请人
NOVOCHERKASSKIJ POLT I IM.S.ORDZHONIKIDZE
发明人
DUSEV VYACHESLAV I,SU;GRIBOVODA ALEKSANDR F,SU;KOVALEVICH VASILIJ G,SU
分类号
E21B10/24
主分类号
E21B10/24
代理机构
代理人
主权项
地址
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