Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874984 | Fluorescent lamp based on a phosphor excited by a molecular discharge | A. Gary Sigai, Michael N. Alexander | 1989-10-17 |
| 4801846 | Rare earth halide light source with enhanced red emission | Jerry Kramer | 1989-01-31 |