Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11821212 | Drop canopy with screen | Gregory Keith Heimbuck, David Thomas McMillan | 2023-11-21 |
| 10151116 | Awning canopy assembly | Scott P. Thompson | 2018-12-11 |
| 8197009 | Wheelchair seatback with two-point mounting hardware | Thomas J. Whelan, James L. Christofferson, Sy Tran | 2012-06-12 |
| 7857394 | Wheelchair seat back with two-point mounting hardware | Thomas J. Whelan, James L. Christofferson, Sy Tran, James M. Koerlin | 2010-12-28 |
| 6059370 | Wheelchair seat back pelvic support system | Brian D. Kanyer, James L. Christofferson, Grant C. Denton | 2000-05-09 |
| 6033025 | Notched support pads for cushioning wheelchair seatback | James L. Christofferson, Brian D. Kanyer, Grant C. Denton | 2000-03-07 |