Drilling rig
    1.
    发明授权
    Drilling rig 失效
    钻机

    公开(公告)号:US3767147A

    公开(公告)日:1973-10-23

    申请号:US3767147D

    申请日:1971-10-21

    申请人: FERO J

    发明人: FERO J

    CPC分类号: E21B19/24 E21B7/028

    摘要: A mounting member is attachable to a vehicle and carries through a rotationally controlable hinged connection a mounting bar for a plurality of drills.

    摘要翻译: 安装构件可附接到车辆并且通过可旋转地控制的铰接连接件承载多个钻孔的安装杆。