Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806824 | Fluorescent lamp using multi-layer phosphor coating | George R. Gillooly, Thomas F. Soules, Mary V. Hoffman | 1989-02-21 |
| 4623816 | Fluorescent lamp using multi-layer phosphor coating | Mary V. Hoffman | 1986-11-18 |