Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6833659 | Cathode ray tube comprising a cathode of a composite material | Petrus Arthur Marie Van Der Heide, Wyndham Michael Johnstone | 2004-12-21 |
| 6680574 | Gas discharge lamp comprising an oxide emitter electrode | Wim Van Den Hoek | 2004-01-20 |