Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4793421 | Programmed automatic drill control | — | 1988-12-27 |
| 4679489 | Automatic leveling system for blast hole drills and the like | Donald M. Mains | 1987-07-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4793421 | Programmed automatic drill control | — | 1988-12-27 |
| 4679489 | Automatic leveling system for blast hole drills and the like | Donald M. Mains | 1987-07-14 |