Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6508316 | Apparatus to measure the earth's local gravity and magnetic field in conjunction with global positioning attitude determination | Robert A. Estes, Andrew Brooks | 2003-01-21 |
| 6212476 | Apparatus to measure the earth's local gravity and magnetic field in conjunction with global positioning attitude determining | Koen Antonie Noy, Robert A. Estes | 2001-04-03 |
| 6097310 | Method and apparatus for mud pulse telemetry in underbalanced drilling systems | John W. Harrell, Andrew Brooks | 2000-08-01 |