Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11179755 | Ventilation system, a method of operating a ventilation system, a duct section to be used in a ventilation system, and the use of such duct section | — | 2021-11-23 |
| 10315059 | Back pressure flap valve arrangement and the use thereof | Bartosz Kowalski, Jacek Czyzewski, Christian Norman | 2019-06-11 |
| 6554138 | Cleaning device | Angus J. Bishop | 2003-04-29 |
| 5197684 | Device for tearing-up and stoking straw | Jorgen Pedersen | 1993-03-30 |