Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6956474 | Hand portable monitoring device for monitoring personnel presence at a location | — | 2005-10-18 |
| 6941776 | Locking case | — | 2005-09-13 |
| 6904842 | Coded ribbon cartridge, decoder, and ribbon ink capacity indicator with LCD display | Frank Benna | 2005-06-14 |
| 6767147 | Coded ribbon cartridge, decoder, and ribbon ink capacity indicator with LCD display | Frank Benna | 2004-07-27 |
| 6548986 | Battery backup system for appliances using wall transformers | — | 2003-04-15 |
| 5347211 | Selectable output power converter | — | 1994-09-13 |
| 5121101 | Apparatus and method for a smoke alarm device with integrated testing circuits | Randolph D. Pearce | 1992-06-09 |