Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4305019 | Warm-white fluorescent lamp having good efficacy and color rendering and using special phosphor blend as separate undercoat | Eugene Graff | 1981-12-08 |
| 4263530 | Warm white fluorescent lamp having good efficacy and color rendering | Richard Corth | 1981-04-21 |