Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5525006 | Flush mount well protector | John Kilman, deceased | 1996-06-11 |
| 5479799 | Key and bolt lock device | John Kilman, deceased, Kent C. Falkenstein, Donal O. Beckstead | 1996-01-02 |
| 5404959 | Drill rig safety shutdown device | Stephen Adkins | 1995-04-11 |
| D275862 | Drill shaft head | John Kilman, deceased | 1984-10-09 |