Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6768307 | Flux plane locating in an underground drilling system | Guenter W. Brune, John E. Mercer | 2004-07-27 |
| 6737867 | Locating arrangement and method using boring tool and cable locating signals | Guenter W. Brune, John E. Mercer | 2004-05-18 |
| 6727704 | Boring tool tracking/guiding system and method with unconstrained target location geometry | Guenter W. Brune, John E. Mercer | 2004-04-27 |