Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7289618 | Method for performing external call forwarding between internet and telephone network in web-phone system | Hak-Joong Choi, Yong Lee | 2007-10-30 |
| 7236485 | Call forwarding method | Young-Sang Lee | 2007-06-26 |