Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6091344 | Communication processing device of toll collecting system | Won-Seo Park, Ho-Cheol Kim, Seog Choi | 2000-07-18 |
| 6078895 | Technique for showing running time by sections on tollway | Seog Choi | 2000-06-20 |
| 6040785 | Mixed lock type toll collecting system and method for toll collection of vehicles on toll road | Won-Seo Park, Wan-Chol Ho, Jong Yeob Kim | 2000-03-21 |