Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6400658 | DVD-RAM disk reproduction apparatus for reducing errors during detection of identification data | Chang-jin Yang, Pyong-yong Seong, Seong-sin Joo, Soo-yul Jung, Yong Jae Lee +2 more | 2002-06-04 |
| 5212613 | Rotary head drum | — | 1993-05-18 |