Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6518498 | Poke-through floor fitting with thermally activated conductor links | Nelson Bonilla | 2003-02-11 |
| 6280042 | Emergency lighting device | Joseph S. Wegrzyn, Milt Erickson | 2001-08-28 |
| 6019477 | Emergency lighting device | Joseph S. Wegrzyn, Milt Erickson | 2000-02-01 |