Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D266499 | Invalid chair | Brent L. Twitchell | 1982-10-12 |
| 4351562 | Movable seat for a motorized transport chair | Brent L. Twitchell, Brent W. Zitting | 1982-09-28 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D266499 | Invalid chair | Brent L. Twitchell | 1982-10-12 |
| 4351562 | Movable seat for a motorized transport chair | Brent L. Twitchell, Brent W. Zitting | 1982-09-28 |