Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6484818 | Horizontal directional drilling machine and method employing configurable tracking system interface | Gregory W. Draper, Hans Kelpe | 2002-11-26 |
| 6470976 | Excavation system and method employing adjustable down-hole steering and above-ground tracking | Brian John Bischel, Gregg Austin, Hans Kelpe | 2002-10-29 |
| 6389360 | Automated bore planning method and apparatus for horizontal directional drilling | Fred G. Delonti, Christopher Dean Rettig, Paul A. Cartwright | 2002-05-14 |