Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4766767 | Method for determining the horizontal airspeed of helicopters in higher speed ranges | Wolfgang Hassenpflug | 1988-08-30 |
| 4702106 | Method for determining the horizontal airspeed of helicopters in low speed ranges | Wolfgang Hassenpflug | 1987-10-27 |