Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7002954 | Method for processing a large amount of intra-calls in a remote control system of a full electronic telephone | — | 2006-02-21 |
| 5896442 | Voice announcement technique of an electronic exchange system | Seung-Gu Kang | 1999-04-20 |