Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7031279 | Gatekeeper supporting handoff and handoff method in IP telephony system | Young S. Lee, Gi-Moo Choi | 2006-04-18 |
| 6775556 | Device and method for processing call between private exchange network and mobile communication network | Gi Moo Ghoi, Pill O Hong | 2004-08-10 |