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发明名称
CORE BARREL
摘要
申请公布号
RU1797642(C)
申请公布日期
1993.02.23
申请号
SU19914926015
申请日期
1991.04.08
申请人
SURGUTSKOE OTDEL ZAPADNO-SIBIRSKOGO NI PK I TEKHNOLOGII GLUBOKOGO RAZVEDOCHNOGO BURENIYA
发明人
ESHIMOV GEORGIJ K,SU
分类号
E21B25/00
主分类号
E21B25/00
代理机构
代理人
主权项
地址
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