Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5649883 | Racer wheelchair trainer | Douglas Mayes | 1997-07-22 |
| 5643143 | Wheelchair trainer | Douglas Mayes | 1997-07-01 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5649883 | Racer wheelchair trainer | Douglas Mayes | 1997-07-22 |
| 5643143 | Wheelchair trainer | Douglas Mayes | 1997-07-01 |