Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6834199 | Portable telephone with an exchangeable data input apparatus | Sang-Min Hyun, Seung-Min Park, Ji Yun PARK, Kyoun-Sun Cho, Yong Jae Kim | 2004-12-21 |
| 5206098 | Battery cover locking device | Young Cho | 1993-04-27 |