Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5352093 | Weedless propeller | R. Douglas Hannon | 1994-10-04 |
| D324363 | Six-blade propeller | R. Douglas Hannon | 1992-03-03 |
| D324364 | Three-blade propeller | R. Douglas Hannon | 1992-03-03 |
| D324201 | Three-blade propeller | R. Douglas Hannon | 1992-02-25 |
| D317147 | Propeller | R. Douglas Hannon | 1991-05-28 |
| 4482298 | Weedless propeller | R. Douglas Hannon | 1984-11-13 |