Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6883601 | Air conditioner with internal heat exchanger and heat exchanger tube therefor | Holger Ullrich | 2005-04-26 |
| 6637219 | Cooling device with a controlled coolant phase upstream of the compressor | Holger Ullrich | 2003-10-28 |