Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5050796 | Fuel preheating device for a heater | Christof Schumacher, Wilfried Renovanz, Bernhard Umlauf | 1991-09-24 |
| 4944454 | Heater, in particular vehicle auxiliary heater, with a temperature safety mechanism | Friedrich Widemann, Guenter Kahnau, Richard Kohse | 1990-07-31 |
| 4744217 | Particle separator arrangement in an exhaust pipe of a diesel engine | Dieter Goerlich, Wilfried Meiler | 1988-05-17 |