Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6828717 | Electron gun having short length and cathode-ray tube apparatus using such electron gun | Yoji Yamamoto, Mika Yamagishi | 2004-12-07 |
| 6705913 | Method for manufacturing impregnated cathode having a cathode pellet | — | 2004-03-16 |