Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 6812639 | Germicidal lamp with end of life arc quenching device | William C. Sax | 2004-11-02 | |
| 6465939 | Robust lamp filament | Robert E. Cassidy | 2002-10-15 | |
| 4538091 | High-pressure sodium lamp spring clip cross piece for electrode and end plug support | George A. Lewis, Kent Collins, Joseph Benesh | 1985-08-27 | $635,000 |
| 4205258 | Internal shorting fuse for a high-intensity discharge lamp | — | 1980-05-27 | $1,020,000 |