Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4306969 | Apparatus for sewage purification | Tomeyoshi Ozawa, Wataru Ito, Norihiko Fujita, Naoki Negishi, Yukihiko Tamaki | 1981-12-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4306969 | Apparatus for sewage purification | Tomeyoshi Ozawa, Wataru Ito, Norihiko Fujita, Naoki Negishi, Yukihiko Tamaki | 1981-12-22 |