Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9664027 | Advanced inground operations, system and associated apparatus | Albert W. Chau, Craig Caswell | 2017-05-30 |
| 9617797 | Drill string adapter and method for inground signal coupling | Albert W. Chau | 2017-04-11 |
| 9540879 | Directional drilling target steering apparatus and method | Bruce Kolpack, David Bahr, Thomas J. Hall | 2017-01-10 |