Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5329164 | Safety circuit for a fuel supply system | — | 1994-07-12 |
| 5324434 | Water purifying apparatus | Yukio Oikawa, Isamu Shigeta, Mitsuhiro Hayamizu | 1994-06-28 |
| 5281330 | Water purifier | Yukio Oikawa, Isamu Shigeta | 1994-01-25 |