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发明名称
DRILLING RIG TRAVELLING DEVICE
摘要
申请公布号
SU1714134(A1)
申请公布日期
1992.02.23
申请号
SU19894756169
申请日期
1989.11.09
申请人
TULSKIJ POLT INSTITUT
发明人
CHENDEV SERGEJ F,SU;BULYCHEV NIKOLAJ S,SU
分类号
E21D1/06;E21B15/00
主分类号
E21D1/06
代理机构
代理人
主权项
地址
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