Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8665829 | Method for controlling devices based on NFC and device control system using the same | Ken Park, Sang-Won Yoon, Woo-Il Kwon | 2014-03-04 |
| 5912957 | Technique for reconnecting office line to key telephone system after power failure | — | 1999-06-15 |
| 5774536 | Balanced network for use in a keyphone system | — | 1998-06-30 |