Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4985058 | Vortex tube separating device | Willem J. C. Prinsloo, Pierre De Villiers | 1991-01-15 |
| 4976748 | Vortex tube separating device | Willem J. C. Prinsloo, Pierre De Villiers | 1990-12-11 |
| 4971603 | Vortex tube separating device | Willem J. C. Prinsloo, Pierre De Villiers | 1990-11-20 |