Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5935033 | Multi-stage sprocket assembly for bicycle | Rock Tseng | 1999-08-10 |
| 5609536 | Bicycle freewheel gear cluster gear-shifting mechanism | — | 1997-03-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5935033 | Multi-stage sprocket assembly for bicycle | Rock Tseng | 1999-08-10 |
| 5609536 | Bicycle freewheel gear cluster gear-shifting mechanism | — | 1997-03-11 |