Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9944372 | Efficient reverse thrusting modular propeller | — | 2018-04-17 |
| 7056092 | Modular propeller | — | 2006-06-06 |
| D473435 | Propeller nut wrench | — | 2003-04-22 |
| 5422686 | Detachable eyeglass assembly for visored headgear | Charles D. Kelman, Diana S. Langley | 1995-06-06 |