Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6739868 | Combustion chamber arrangement | Michael Haefner | 2004-05-25 |
| 6724983 | Heater part, especially for a vehicle water or air heater which is operated with liquid fuel | Michael Humburg | 2004-04-20 |
| 6695037 | Heating device for an automobile especially a water heating device in the form of a backup heater or auxiliary heater | Michael Humburg, Paul Achatz | 2004-02-24 |