Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8606241 | Method and system for ring back tone alternative service based on terminal and mobile communication terminal therefor | Seongsoo Park, Daesic Woo, Donghahk Lee, Jongtae Ihm, Sehyun Oh | 2013-12-10 |