Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846046 | Hydraulic drive circuit system | Masami Ochiai, Morio Oshina, Mitsuo Sonoda, Koji Nozaki | 1989-07-11 |
| 4813447 | Flow control valve apparatus | Ken Ichiryu, Masami Ochiai, Yuusaku Nozawa, Hideyo Kato | 1989-03-21 |