Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11559706 | Work safety management system using safety belt unit for high-place work | Jung Woo Lee | 2023-01-24 |
| 5543933 | Reserve-recording method and apparatus for VCR | Yong Kyung OH, Se I. Cha, Chul Seung LEE | 1996-08-06 |