Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8594003 | Method of estimating location of mobile device in transportation using WiFi | Dong Soo Han, Jong-Young Koo | 2013-11-26 |
| 5978453 | Method and apparatus for switching to a modem in a key telephone | Jong Won Kim | 1999-11-02 |