Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5917818 | Synchronous digital hierarchy digital cross-connection apparatus | Je Soo Ko, Sung Hyuk Choi, Ho-Jae Lee, Jong Hyun Lee | 1999-06-29 |
| 5799001 | Composite network protective/recovering device for synchronous digital hierarchy DXC | Dong Choon Lee, Ho Geon KIM, Ho-Jae Lee | 1998-08-25 |