Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9158022 | Electrical probing electrode | Seong-Kon Lee, Kwon-Gyu Park | 2015-10-13 |
| 8282081 | Guiding device of hauling rope for tools in borehole | Seho Hwang, Hyoung Chan Kim, Jehyun Shin | 2012-10-09 |