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发明名称
ARRANGEMENT FOR MEASURING VERTICAL TRAVEL OF DRILLING TOOL FROM DRAWWORKS DRUM ANGLE
摘要
申请公布号
SU1452947(A2)
申请公布日期
1989.01.23
申请号
SU19874218129
申请日期
1987.01.19
申请人
KOLSKAYA KOMPLEKSNAYA GEOLOGORAZVEDOCHNAYA EKSPEDITSIYA SVERKHGLUBOKOGO BURENIYA
发明人
BASOVICH VLADIMIR S,SU;GRANKIN SERGEJ A,SU;CHINAROV SERGEJ I,SU
分类号
E21B45/00
主分类号
E21B45/00
代理机构
代理人
主权项
地址
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