发明名称 CORE LIFTER CASE AND METHODS FOR USING SAME
摘要 A core lifter case for receiving a core lifter. An inner surface of the core lifter case defines a plurality of circumferentially spaced slots, and each slot is configured to receive at least a portion of a corresponding rib defined by an outer surface of the core lifter.
申请公布号 WO2015188099(A1) 申请公布日期 2015.12.10
申请号 WO2015US34478 申请日期 2015.06.05
申请人 BLY IP INC. 发明人 DRENTH, CHRISTOPHER, L.;IONDOV, GEORGE
分类号 E21B25/12 主分类号 E21B25/12
代理机构 代理人
主权项
地址