Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4819733 | Automatic fire extinguishing equipment | Yoshio Aria, Akira Kitajima | 1989-04-11 |
| 4800285 | Flame detecting arrangement for detecting a flame through horizontal and vertical scanning of a supervisory region by using a photodetector | Akira Kitajima, Yoshio Arai | 1989-01-24 |