Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9608443 | Energy storage system of uninterruptible power supply equipped with battery and method of driving the same | Sung Won Chung, Dong Hun Yum | 2017-03-28 |
| 4500752 | Telecontrol system for an audio recorder of a radio telephone | — | 1985-02-19 |