Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6644143 | Grip gear-shifter for actuating derailleur of bicycle | Jen-Ji Wang, I-Chao Yan, Te-Sheng TSENG | 2003-11-11 |
| 6564670 | Bicycle speed control apparatus | Jen-Ji Wang | 2003-05-20 |