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发明名称
CORE CATCHER
摘要
申请公布号
RU2021482(C1)
申请公布日期
1994.10.15
申请号
SU19914954385
申请日期
1991.06.27
申请人
NAUCHNO-ISSLEDOVATELSKIJ INSTITUT BUROVOJ TEKHNIKI
发明人
EDELMAN YAKOV A
分类号
E21B25/10;(IPC1-7):E21B25/10
主分类号
E21B25/10
代理机构
代理人
主权项
地址
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