Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5373216 | Electrodeless arc tube with stabilized condensate location | Mark E. Duffy | 1994-12-13 |
| 5363015 | Low mercury arc discharge lamp containing praseodymium | Tommie Edward Berry, Mark E. Duffy, Timothy D. Russell | 1994-11-08 |
| 5306987 | Acoustic resonance arc stabilization arrangement in a discharge lamp | Mark E. Duffy | 1994-04-26 |