Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6644675 | Stair chair | Jonathan Stewart Ellis | 2003-11-11 |
| 6435538 | Stair chair | Jonathan Stewart Ellis | 2002-08-20 |
| 6219864 | Monitoring patient handling equipment | Jonathan Stewart Ellis, Alan Jackson | 2001-04-24 |
| D430078 | Fabric chair with three stair climbing wheels | Jonathan Stewart Ellis, Alan Jackson | 2000-08-29 |