Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4558988 | Rotor disk cover plate attachment | Douglas L. Kisling, Edward C. Hill | 1985-12-17 |
| 4538825 | Wheelchair anti-rollback mechanism | James W. Brazell | 1985-09-03 |
| 4537415 | Dynamic brake for manual wheelchair | Gary W. Kelly | 1985-08-27 |