Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5054458 | Combustion engine with fuel injection system, and a spray valve fo r such an engine | Guus Wechem, Gerrit J. Beunk, Fritz Van Den Elst | 1991-10-08 |
| 4703298 | Thermostat with ceramic mounting pins of resistive material | — | 1987-10-27 |
| 4528540 | Thermostat | Jan J. Stiekel, Marinus Hagen, Klaas H. Prins | 1985-07-09 |
| 4501255 | Diesel fuel filter heater | Arie Van Der Ploeg, Wim Jansen | 1985-02-26 |