Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11745825 | Direct-drive bicycle | — | 2023-09-05 |
| 11708127 | Walking vehicle that is easy to swing and steer | — | 2023-07-25 |
| 11202728 | Transmission apparatus for a leveraged wheelchair | Shih-Yi Lu, Shi-Chang Tseng | 2021-12-21 |
| 7909716 | Dual-ratchet wheel transmission apparatus | — | 2011-03-22 |