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发明名称
DEEP-WELL SAMPLER
摘要
申请公布号
SU1298369(A1)
申请公布日期
1987.03.23
申请号
SU19853938413
申请日期
1985.07.26
申请人
VOLGOGRADSKIJ GNI PI NEFTYANOJ PROMYSHLENNOSTI
发明人
MIKHALKOV PETR V,SU;TINYAKOV GENNADIJ F,SU
分类号
E21B49/08
主分类号
E21B49/08
代理机构
代理人
主权项
地址
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