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经营范围
发明名称
METHOD FOR RELEASING STUCK DRILLING TOOL
摘要
申请公布号
RU1799993(C)
申请公布日期
1993.03.07
申请号
SU19914909556
申请日期
1991.02.07
申请人
TSNI LABORATORIYA PROIZVODSTVENNOGO OBEDINENIYA "UKRNEFT"
发明人
SHUMEGA STEPAN V,SU
分类号
E21B31/00
主分类号
E21B31/00
代理机构
代理人
主权项
地址
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