Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11448218 | Displacement machine according to the spiral principle, method to regulate pressure in the counter-pressure chamber by using a pressure difference and characteristic curve | Roman Lässer, Uwe Wuitz, Christian Busch, Frank Obrist | 2022-09-20 |
| 10801496 | Positive-displacement machine according to the spiral principle, method for operating a positive-displacement machine, positive-displacement spiral, vehicle air-conditioning system and vehicle | Frank Obrist, Christian Busch | 2020-10-13 |