Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5690570 | Multistage sprocket assembly for a bicycle | Mickey Wen-pin Chang | 1997-11-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5690570 | Multistage sprocket assembly for a bicycle | Mickey Wen-pin Chang | 1997-11-25 |