Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4796018 | Exit guiding system | Tsutomu Nakanishi, Akira Kitajima, Yoshiaki Fuwa | 1989-01-03 |
| 4369435 | Fire detector and fire alarm system having circuitry to detect removal of one or more detectors at a signal station | Kanji Ishii, Sadataka Yuchi, Akira Furuyama | 1983-01-18 |