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发明名称
CORE BARREL
摘要
申请公布号
SU1752925(A1)
申请公布日期
1992.08.07
申请号
SU19904851509
申请日期
1990.07.16
申请人
SP K BYURO N-PROIZV OBEDINENIYA "GEOTEKHNIKA"
发明人
YURIN ALEKSANDR S,SU;NIKANOROV ALEKSEJ M,SU;KONDRATENKOV ALEKSEJ V,SU;FOMENKO IGOR N,SU
分类号
E21B25/08
主分类号
E21B25/08
代理机构
代理人
主权项
地址
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