Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5673027 | Smoke detector, adjustment apparatus and test apparatus for such a smoke detector | — | 1997-09-30 |
| 5671159 | Fire detecting apparatus | — | 1997-09-23 |
| 5629671 | Photoelectric type fire detector and adjustment unit therefor | — | 1997-05-13 |
| 5627514 | Fire detector and fire receiver | — | 1997-05-06 |
| 5594417 | Fire alarm system | — | 1997-01-14 |
| 5530433 | Smoke detector including ambient temperature compensation | — | 1996-06-25 |
| 5453749 | Sensitivity measuring apparatus for use with a fire detector | — | 1995-09-26 |
| 4825196 | Signal transmission circuit of fire/security protection system | — | 1989-04-25 |
| 4816808 | Fire alarm system | — | 1989-03-28 |
| 4647785 | Function test means of photoelectric type smoke detector | — | 1987-03-03 |