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经营范围
发明名称
BOREHOLE DRILLING DEVICE
摘要
申请公布号
SU1573129(A1)
申请公布日期
1990.06.23
申请号
SU19884427223
申请日期
1988.05.16
申请人
KY VNII STROITELNOGO DOROZHNOGO MASH;KY POLT INSTITUT
发明人
GOJKHMAN YAKOV A,SU;SMIRNOV GENNADIJ A,SU;ERESKO SERGEJ P,SU
分类号
E21B7/24
主分类号
E21B7/24
代理机构
代理人
主权项
地址
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