Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5831379 | Directly heated cathode structure | Bong-uk Jeong, Chang-Seob Kim, Seok-Bong Shon | 1998-11-03 |
| 5113110 | Dispenser cathode structure for use in electron gun | — | 1992-05-12 |