Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1074982 | Warped plate for ventilation duct | — | 2025-05-13 |
| 9869325 | Fan blade | — | 2018-01-16 |
| 9856888 | Fan blade and attaching means therefor | — | 2018-01-02 |
| 8876480 | Reinforcing element for use with a ventilator hub | — | 2014-11-04 |
| 8827652 | Fan blade and attaching means therefor | — | 2014-09-09 |
| 5655616 | Hovercraft and process of regulating air cushion | Hans-Hinrich Witt, Karsten Witt | 1997-08-12 |