Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699043 | Individual smoke detector with sensitivity calibration and monitoring | David B. Lederer | 1997-12-16 |
| 5691699 | Security detector with optical data transmitter | Leigh Austin Laughlin | 1997-11-25 |