Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5703429 | Directly heated cathode structure | Chang-Seob Kim, Sang Kyun Kim, Bong-uk Jeong | 1997-12-30 |
| 5701052 | Directly heated cathode structure | Chang-Seob Kim, Sang Kyun Kim, Bong-uk Jeong | 1997-12-23 |
| 5668434 | Directly heated cathode for cathode ray tube | Chang-Seob Kim, Bong-uk Jeong, Sang Kyun Kim, Sang-uk Shin | 1997-09-16 |