Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4706170 | Lighting fixture hanger unit for a modular lighting system | Douglas J. Herst | 1987-11-10 |
| D274657 | Luminaire for indirect lighting | Douglas J. Herst | 1984-07-10 |
| 4420798 | Adjustable overhead lighting system | Douglas J. Herst | 1983-12-13 |