Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4969856 | Pulley type speed-shifting device | Yutaka Furukawa | 1990-11-13 |
| 4869706 | Speed-shifting device | Katsushiro Kuchisubo, Chikara Sakamoto | 1989-09-26 |
| 4838834 | Speed-shifting device | — | 1989-06-13 |
| 4725259 | Belt drive method and apparatus | — | 1988-02-16 |