Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7501935 | Multi-frequency fire alarm sounder | Manley S. Keeler, Simon Ha | 2009-03-10 |
| 7486173 | System and method for setting parameters from control panel | — | 2009-02-03 |
| 7242314 | Strobe unit with current limiter | — | 2007-07-10 |
| 7218205 | Variable candela strobe with constant trigger voltage | — | 2007-05-15 |
| 7053766 | Self-testing system and method | Jeffrey Michael Klein | 2006-05-30 |
| 6856241 | Variable candela strobe | Lee D. Tice, Simon Ha | 2005-02-15 |
| 4426736 | Programmable clock radio having nap and sleep type features | — | 1984-01-17 |
| 4241294 | Brightness control circuit for a vacuum fluorescent display | — | 1980-12-23 |