Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9790064 | Autonomous winch with grip pulley | — | 2017-10-17 |
| 4529168 | Double shut-off valve which provides perfectly tight sealing | — | 1985-07-16 |
| 4471966 | Apparatus forming a pressure seal for separating two chambers containing fluid placed under different pressures | Jean Vandervorst | 1984-09-18 |
| 4395048 | Pump safety device | Jean Vandervorst | 1983-07-26 |