Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6791251 | Metal cathode and indirectly heated cathode assembly having the same | Dong-Kyun Seo, Jong-Seo Choi, Kyu-Nam Joo, Sung-Hwan Moon, Yoon-Chang Kim +2 more | 2004-09-14 |