Issued Patents 2023
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11795964 | Levered counterweight feathering system | Gert Johannes van der Merwe, Daniel Alan Niergarth, Brian Lewis Devendorf | 2023-10-24 |
| 11674435 | Levered counterweight feathering system | Gert Johannes van der Merwe, Daniel Alan Niergarth, Brian Lewis Devendorf | 2023-06-13 |