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发明名称
BLASTHOLE REAMER
摘要
申请公布号
SU1709055(A1)
申请公布日期
1992.01.30
申请号
SU19884634700
申请日期
1988.12.05
申请人
KHRIPKOV ALEKSANDR,SU;KHRIPKOVA TATYANA S,SU
发明人
KHRIPKOV ALEKSANDR I,SU;KHRIPKOVA TATYANA S,SU
分类号
E21B7/28
主分类号
E21B7/28
代理机构
代理人
主权项
地址
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