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发明名称
CORE BARREL
摘要
申请公布号
SU1701889(A1)
申请公布日期
1991.12.30
申请号
SU19894760917
申请日期
1989.11.20
申请人
VNI PK I PO OSUSHENIYU MESTOROZHDENIJ POLEZNYKH ISKOPAEMYKH, CüE|ôAóÓHÕM ×OPHÕM PA¬OTAM, PÔ¯HôÚHOö ×EOóO×ôô ô MAPKÛEö¯EPCKOMÔ ¯EóÔ
发明人
KLIMENTOV MIKHAIL N,SU;NESVAT YURIJ A,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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