Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9433552 | Electric walking assistant device | Yoonyoung Chang, Honggul Jun, Jaehark Park, Duksang KIM, Eulpyo Hong +7 more | 2016-09-06 |
| 8627909 | Walking-assistant device | Yoon Young Chang, Byeong Rim Jo, Juhn Ho Park, Hong Gul Jun, Byunghoon Min | 2014-01-14 |