Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6471610 | Front derailleur for a bicycle | Yu-Jen Chien | 2002-10-29 |
| 6387008 | Speed-changing control mechanism of multistage speed-changing wheel hub | Jia-Lin Chen, Caesar Chen | 2002-05-14 |