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发明名称
CORING APPARATUS
摘要
申请公布号
RU1795077(C)
申请公布日期
1993.02.15
申请号
SU19914849346
申请日期
1991.07.09
申请人
VNII METODIKI TEKHNIKI RAZVEDKI
发明人
ZHUKOV ALEKSANDR M,SU;KHODAKOVSKIJ YURIJ L,SU;GORELIKOV VLADIMIR G,SU
分类号
E21B25/04
主分类号
E21B25/04
代理机构
代理人
主权项
地址
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