Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5343152 | Electromagnetic homing system using MWD and current having a funamental wave component and an even harmonic wave component being injected at a target well | — | 1994-08-30 |
| 5305212 | Alternating and static magnetic field gradient measurements for distance and direction determination | — | 1994-04-19 |