Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7771086 | Lighting device comprising a lamp unit a reflector | — | 2010-08-10 |
| 4920288 | Piston engine with dynamic groove bearing internal to piston and isolated from compression space | Ronald den Heijer, Peter G. M. Simons | 1990-04-24 |