Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5107755 | Inconspicuous, room-ceiling-mountable, non-productive-energy-loss-minimizing, air diffuser for a room | Raymond F. Leban | 1992-04-28 |
| 4542615 | Drop ceiling framework | — | 1985-09-24 |
| 4475446 | High volume ceiling type air diffuser | — | 1984-10-09 |
| 4434599 | Drop ceiling frame construction | — | 1984-03-06 |
| 4332005 | Lighting panel for drop ceilings | — | 1982-05-25 |
| 4214512 | Drop ceiling air diffuser with horizontal discharge pattern | — | 1980-07-29 |