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发明名称
APPARATUS AND METHOD OF CONCENTRIC CEMENT BONDING OPERATIONS BEFORE AND AFTER CEMENTATION
摘要
申请公布号
EP2748422(A2)
申请公布日期
2014.07.02
申请号
EP20120834486
申请日期
2012.09.17
申请人
TUNGET, BRUCE A.
发明人
TUNGET, BRUCE A.
分类号
E21B47/00
主分类号
E21B47/00
代理机构
代理人
主权项
地址
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