Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6089465 | Heater with exhaust outlet connection integrated into the heat exchanger | Maximilian Hellwig | 2000-07-18 |
| 5727730 | Air heating device | Christine Sallinger, Rudiger Galtz | 1998-03-17 |