Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6734632 | Electric discharge lamp device | — | 2004-05-11 |
| 6727636 | Discharge lamp device having discharge lamp and circuit unit directly connected together | — | 2004-04-27 |
| 6710545 | Discharge lamp apparatus having directly coupled lamp and electronic controller | Koichi Toyama | 2004-03-23 |