Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8049434 | Lighting commissioning device and method | Ling Wang, William L. Keith, James Cai | 2011-11-01 |
| 8035308 | Software controlled electronic dimming ballast | William L. Keith, George Grouev | 2011-10-11 |