Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888703 | Apparatus for monitoring the toxicant contamination of water by using aquatic animals | Kenji Baba, Hayao Yahagi, Shoji Watanabe, Naoki Hara, Mikio Yoda +3 more | 1989-12-19 |