Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869706 | Speed-shifting device | Katsushiro Kuchisubo, Chikara Sakamoto | 1989-09-26 |
| 4838834 | Speed-shifting device | — | 1989-06-13 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869706 | Speed-shifting device | Katsushiro Kuchisubo, Chikara Sakamoto | 1989-09-26 |
| 4838834 | Speed-shifting device | — | 1989-06-13 |