Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5242265 | Aircraft pitch change mechanism | Thomas C. Hermans, David Edward Bulman, Edwin K. Miller, Thomas G. Wakeman, David L. Joyce | 1993-09-07 |
| 5213471 | Propeller pitch control | Edwin K. Miller, Robert L. Roberts, David L. Joyce, John S. Mears | 1993-05-25 |
| 5174716 | Pitch change mechanism | Edwin K. Miller | 1992-12-29 |
| 5156648 | Prop-fan pitch-change mechanism | — | 1992-10-20 |
| 5154580 | Propeller pitch change mechanism | — | 1992-10-13 |
| 5152668 | Pitch change mechanism for prop fans | David Edward Bulman, Thomas C. Hermans | 1992-10-06 |
| 4564337 | Aircraft propeller | Herbert Zimmer, Ingo Dathe, Reinhard Hoffmann, Franz X. Wortmann | 1986-01-14 |