Quotables
"I hate what they've done to my child...I would never let my own children watch it. "
Vladimir Zworykin, television pioneer ; Talking about an invention in which he played a critical role.
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| Number | Title | Issue Date |
| 7036606 | Quick-detach vehicle-mounted auger driver The present invention provides a device useful for boring holes into the earth, and is especially useful for drilling holes in which fence posts are to be placed. A device according to the invention is completely self-powered, having its own on-board engine which su... | 05/02/2006 |
| 4194579 | Drilling apparatus and method A drilling apparatus including improved means for drill string manipulation for effecting an improved method of drill steel breakout and disassembly. This is a continuation, division, of application Ser. No. 712,622, filed Aug. 9, 1976.... | 03/25/1980 |
| 3949818 | Hydraulic drilling rig and power swivel A two-ram hydraulic drilling rig is provided with a lateral support frame. The rams have rods connected through a tension structure with a power swivel. The power swivel has a removable swivel stem assembly for allowing through-swivel positioning of drill... | 04/13/1976 |
| 3942592 | Drill stem make-up and break-out system for earth drilling machines A system for use in the make-up or break-out of drill stem members of earth boring machines having a hydraulically operated power swivel to rotate the drill stem and hydraulic cylinders to raise and lower the swivel. A first, variable volume pump supplies... | 03/09/1976 |
