Issued Patents 2005
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6975119 | Boring tool tracking/guiding system and method with unconstrained target location geometry | Guenter W. Brune, John E. Mercer | 2005-12-13 |
| 6963201 | Flux plane locating in an underground drilling system | Guenter W. Brune, John E. Mercer | 2005-11-08 |
| 6927741 | Locating technique and apparatus using an approximated dipole signal | Guenter W. Brune, John E. Mercer, Rudolf Zeller | 2005-08-09 |
| 6917202 | Boring tool tracking/guiding system and method with unconstrained target location geometry | Guenter W. Brune, John E. Mercer | 2005-07-12 |
| 6882154 | Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal | John E. Mercer | 2005-04-19 |
| 6856135 | Boring tool tracking/guiding system and method with unconstrained target location geometry | Guenter W. Brune, John E. Mercer | 2005-02-15 |
| 6845822 | Auto-extending/retracting electrically isolated conductors in a segmented drill string | — | 2005-01-25 |