Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9631714 | Bicycle sprocket and bicycle crank assembly | Etsuyoshi Watarai, Koji Yuasa | 2017-04-25 |
| 9540070 | Bicycle sprocket and bicycle crank assembly | Etsuyoshi Watarai | 2017-01-10 |