Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6085659 | Electronic explosives initiating device | Christo Andre Beukes, Vivian Edward Patz, Ray Frederick Greyvenstein, Rudy W Spiessens | 2000-07-11 |
| 4819560 | Detonator firing element | Vivian Edward Patz | 1989-04-11 |
| 4796531 | Mining method | Raymond Catherall Atkins | 1989-01-10 |