Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6901032 | Timepiece from which sunrise and sunset time can be determined | Jang-Sung Choi | 2005-05-31 |
| 6799914 | Arabic-persian alphabeth input apparatus | Jang-Sung Choi | 2004-10-05 |
| 6625085 | Universal timepiece from which latitude and longitude can be determined | Jang-Sung Choi | 2003-09-23 |