Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5150405 | Duplex structure signal transfer point system for common channel signalling system No. 7 | Young Han Lee, Young Sik Baek, Seok-gyun Lee, Kun-woo Lee, Hyun Tae Lee | 1992-09-22 |