Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10429180 | Versine trolley-type equipment for inspecting track irregularity | Il Yoon Choi, Jun Suk Lee, In Ki Min | 2019-10-01 |
| 8505463 | Wheel-type ultra high speed railway system | Hyung Woo Lee, Chan Bae Park, Byung Song Lee, Hyun June Park, Yong Hyeon CHO +5 more | 2013-08-13 |
| 8468949 | Vacuum division management system and vacuum blocking screen device for tube railway system | Hyung Chul Kim, Dong Wook Jang, Yong Hyeon CHO, Hyung Woo Lee, Chan Bae Park | 2013-06-25 |