Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846066 | Detonator system | Timothy A. Beattie | 1989-07-11 |
| 4777880 | Blasting method with above and below surface delays | Timothy A. Beattie, Stewart Grant Hamilton, Mark Alan Irving | 1988-10-18 |