Issued Patents 2018
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10069879 | Method for operating application providing group call service using mobile voice over internet protocol | Young Joon, Choon Taek, Jung Woon Taek, Se Jong, Dae Gil +7 more | 2018-09-04 |