Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12090102 | Wheelchair back support adjustment system with central spherical joint | Thomas R. Hetzel, Joseph S. Bieganek, Karl Youngdahl, Joshua A. Middel | 2024-09-17 |
| 8517469 | Three-axis adjustable back support assembly and method | Thomas R. Hetzel, Joseph S. Bieganek, Rex W. Stevens | 2013-08-27 |