Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9658138 | Container fixing holder of time-series sediment trapping device | Dong Jin Ham, Sang-Bum Chi, Kyeong-Hong Kim, Hyoung-Jeek Kim | 2017-05-23 |
| 9416654 | Compound sample extraction apparatus | Dong Jin Ham, Sang-Bum Chi, Kyeong-Hong Kim | 2016-08-16 |
| 7770887 | Paper money guide apparatus | Chang Ho Park, Kyong Tae Lee | 2010-08-10 |
| 7299978 | Bill deposit and withdrawal apparatus | Chang Ho Park | 2007-11-27 |