Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4315158 | Photoelectric smoke sensing chamber and smoke sensor box | Yasugi Kakigi | 1982-02-09 |
| 4297688 | Photoelectric smoke sensing and alarming device | — | 1981-10-27 |
| 4249082 | Photoelectric smoke sensor box | Yasugi Kakigi | 1981-02-03 |
| 4198627 | Photoelectric synchronous smoke sensor | — | 1980-04-15 |
| 4186343 | Synchronous frequency synthesis method for a radio trnsmitter-receiver | — | 1980-01-29 |