Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8723066 | Dome switch device | Joon-Ho Park | 2014-05-13 |
| 5110482 | Water repurification method of city water and its equipment | — | 1992-05-05 |
| 4946600 | Water repurification method of city water and its equipment | — | 1990-08-07 |