Issued Patents 2002
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6496008 | Flux plane locating in an underground drilling system | Guenter W. Brune, Albert W. Chau | 2002-12-17 |
| 6457537 | Mapping tool for tracking and/or guiding an underground boring tool | Peter H. Hambling, Rudolf Zeller, Shiu S. Ng, Guenter W. Brune, Lloyd A. Moore | 2002-10-01 |
| 6454023 | Mapping tool for tracking and/or guiding an underground boring tool | Peter H. Hambling, Rudolf Zeller, Shiu S. Ng, Guenter W. Brune, Lloyd A. Moore | 2002-09-24 |
| 6446728 | Auto-extending/retracting electrically isolated conductors in a segmented drill string | Albert W. Chau | 2002-09-10 |
| 6417666 | Boring tool tracking system and method using magnetic locating signal and wire-in-pipe data | — | 2002-07-09 |
| 6400159 | Orientation sensor especially suitable for use in an underground boring device | Rudolf Zeller | 2002-06-04 |
| 6396275 | Arrangement using measured pitch and locating field measurements to determine a positional relationship | — | 2002-05-28 |
| 6364035 | Establishing positions of locating field detectors and path mapping in underground boring tool applications | Guenter W. Brune, Peter H. Hambling, Lloyd A. Moore, Shiu S. Ng, Rudolf Zeller | 2002-04-02 |
| 6351892 | Orientation sensor utilizing intra-pattern property measurements | Rudolf Zeller | 2002-03-05 |
| 6344904 | Arrangement for reading from and/or writing to flexible sheet media in a curved configuration and method | — | 2002-02-05 |