Issued Patents All Time
Showing 51–53 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4749986 | Collecting process of fire data and fire detector using the process and fire alarm system also using the process | Shigeru Otani, Takashi Ono | 1988-06-07 |
| 4749987 | Analog fire detector and analog fire alarm system using the same | — | 1988-06-07 |
| 4675661 | Light-attenuation type fire detector assembly | — | 1987-06-23 |