Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5593347 | Emergency ventilation system for elevator cab | Terry Roy Mandy, Nazar F. Bally | 1997-01-14 |
| 5412542 | Down lighting systems and fixtures therefor | — | 1995-05-02 |
| 5408394 | Down lighting systems and fixtures thereof | — | 1995-04-18 |
| 5354233 | Emergency ventilation system for elevator cab | Terry Roy Mandy, Nazar F. Bally | 1994-10-11 |
| 5149185 | Emergency hall lighting | — | 1992-09-22 |
| 5145247 | Down lighting systems and fixtures therefor | — | 1992-09-08 |
| 5003432 | Down lighting systems and fixtures therefor | — | 1991-03-26 |
| 4890200 | Down lighting systems and fixtures therefor | — | 1989-12-26 |