Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5957002 | Dual lever type derailleur gear unit for a bicycle | — | 1999-09-28 |
| 5690570 | Multistage sprocket assembly for a bicycle | Mickey Wen-pin Chang | 1997-11-25 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5957002 | Dual lever type derailleur gear unit for a bicycle | — | 1999-09-28 |
| 5690570 | Multistage sprocket assembly for a bicycle | Mickey Wen-pin Chang | 1997-11-25 |