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发明名称
BUJE DE ABERTURA ASCENDENTE Y MONTAJE DE CABEZAL DE BARRIL CENTRAL QUE COMPRENDE EL MISMO
摘要
Se refiere a un buje para el posicionamiento dentro de un montaje de barril central durante una operacion de perforacion de abertura ascendente
申请公布号
PE15782015(A1)
申请公布日期
2015.11.05
申请号
PE20150001959
申请日期
2014.03.11
申请人
LONGYEAR TM, INC.
发明人
IONDOV, GEORGE
分类号
E21B17/046;E21B17/05
主分类号
E21B17/046
代理机构
代理人
主权项
地址
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