Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5585677 | Backup power-supply system for emergency | Kyungyong Cheon, Kyungsang Lee | 1996-12-17 |
| 5486726 | Power-supply control system of peripheral equipment of computer | Heejo Kim, Jongyong Leem, Bongrak Choi, Kyungsang Lee | 1996-01-23 |