Issued Patents 2016
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9421983 | Active pressurization system making use of platform track area upper slab of underground train station | Dong Hyeon Kim | 2016-08-23 |
| 9330135 | Method, apparatus and computer readable recording medium for a search using extension keywords | Do Yung Yoon | 2016-05-03 |