Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5337558 | Engine exhaust purification system | — | 1994-08-16 |
| 5311737 | Exhaust purification apparatus for an engine | Kiyoshi Kuronishi, Naoyuki Noguchi, Hirofumi Nishimura | 1994-05-17 |