Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5983638 | Hydraulic switching valve, and a free piston engine provided therewith | Peter Augustinus Johannes Achten, Theodorus Gerhardus Potma | 1999-11-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5983638 | Hydraulic switching valve, and a free piston engine provided therewith | Peter Augustinus Johannes Achten, Theodorus Gerhardus Potma | 1999-11-16 |