Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7333472 | Internet protocol telephony exchange system and call control method thereof | Doo-Yong Yang, Sung Chul HONG, Ha-Hong Kim | 2008-02-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7333472 | Internet protocol telephony exchange system and call control method thereof | Doo-Yong Yang, Sung Chul HONG, Ha-Hong Kim | 2008-02-19 |