Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10742803 | Apparatus and method for recording cellular call in an internet telephone system | Joong-Seok Park | 2020-08-11 |
| 8538390 | Communication system, apparatus and method for providing call state thereof | Soon Hyun KWON | 2013-09-17 |
| 8385328 | Apparatus and method for providing mirroring service in VolP system including IP-PBX | See-Gyoung Seol | 2013-02-26 |