Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882906 | Engine braking system | Shigeo Sekiyama | 1989-11-28 |
| 4858440 | Turbo-compound engine | — | 1989-08-22 |
| 4843822 | Turbo compound engine | — | 1989-07-04 |
| 4836445 | Vehicle heating system | — | 1989-06-06 |
| 4800726 | Turbo compound engine | Keiji Kishishita | 1989-01-31 |