发明名称 DIVERTER COVER ASSEMBLY AND METHODS OF USE
摘要 A diverter cover assembly includes a first arrangement of sliding plates positioned above a central bore of a diverter and movable in substantially opposite directions to open and close over the central bore.
申请公布号 WO2013191949(A2) 申请公布日期 2013.12.27
申请号 WO2013US44970 申请日期 2013.06.10
申请人 HYDRIL USA MANUFACTURING LLC 发明人 WELLS, LAURA, CHRISTINE;CHILDERS, LEONARD, G.;LARSON, ERIC, DALE;BLUE, ROBERT, ALLEN;MELENDEZ, LUIS
分类号 E21B41/00 主分类号 E21B41/00
代理机构 代理人
主权项
地址