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发明名称
BOREHOLE REAMER
摘要
申请公布号
SU589335(A1)
申请公布日期
1978.01.25
申请号
SU19762320828
申请日期
1976.02.06
申请人
NII STROITELNOGO PROIZV GOSSTROYA UK SSR
发明人
ROMANOV STANISLAV V,SU;CHUVENKOV YURIJ V,SU
分类号
E21B7/28;(IPC1-7):E02D17/14
主分类号
E21B7/28
代理机构
代理人
主权项
地址
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