Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5139458 | Fresh-air supply system for a ventilation device of a vehicle | Heinz Koukal, Klaus Arold, Hans Trube | 1992-08-18 |
| 5056423 | Device for supplying fresh air to the passenger space of a vehicle | Heinz Koukal, Klaus Arold, Hans Trube | 1991-10-15 |