Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879492 | Fluorescent lamp having a multi-layer phosphor optimized for lumen output, color rendering and cost | William E. Wilson | 1989-11-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879492 | Fluorescent lamp having a multi-layer phosphor optimized for lumen output, color rendering and cost | William E. Wilson | 1989-11-07 |