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经营范围
发明名称
DEVICE FOR MEASURING VERTICAL DISPLACEMENT OF DRILL STRING
摘要
申请公布号
SU1557315(A1)
申请公布日期
1990.04.15
申请号
SU19884391641
申请日期
1988.03.10
申请人
KB POLT I IM.V.V.KUJBYSHEVA, ´ôóôAó B ×.CÕ³PAHô
发明人
BRAZHNIKOV VLADIMIR A,SU;ZAVARZIN NIKOLAJ I,SU;RAKHIMOV ABBARKHODZHA K,SU;SERGEEV MIKHAIL I,SU;TITENKOV VLADIMIR V,SU
分类号
E21B45/00;E21B44/00;E21B47/04;G01B7/04
主分类号
E21B45/00
代理机构
代理人
主权项
地址
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