Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9413304 | Electronic device and control method thereof | Jae-cheol Lee, Byung Soo Kim, Kee-yeong CHO | 2016-08-09 |
| 8841966 | Sound output device using vacuum tube, audio apparatus and method for sound output thereof | Jae-cheol Lee, Byung Soo Kim, Kee-yeong CHO | 2014-09-23 |
| 6313831 | Device for synchronizing a power drive signal of a monitor and a method therefor | Chun-Geun Choi | 2001-11-06 |
| 5714843 | CRT spot killer circuit responsive to loss of vertical synchronizing signal | — | 1998-02-03 |