Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9669657 | Bidirectional hub assembly | Hubert Chen | 2017-06-06 |
| 7556109 | Electric wheelchair suspension | Yung-Hsin Chen | 2009-07-07 |
| 7380824 | Wheelchair suspension | Yung-Hsin Chen | 2008-06-03 |