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发明名称
ROLLER CUTTER BIT BEARING
摘要
申请公布号
SU1677232(A1)
申请公布日期
1991.09.15
申请号
SU19884375283
申请日期
1988.02.03
申请人
MO I NEFTI GAZA IM.I.M.GUBKINA
发明人
PETROV VLADIMIR F,SU;SLYADNEV MIKHAIL A,SU
分类号
E21B10/22
主分类号
E21B10/22
代理机构
代理人
主权项
地址
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