Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7909739 | Pedal exercise machine having arc trajectory | Sang Young Choi, Eung-Won Kim, Sang Seo Han, Sang-jun Han, Gi-Hong Kim | 2011-03-22 |
| 7618351 | Pedal exercise machine having arc trajectory | Sang Young Choi, Eung-Won Kim, Sang Seo Han, Sang-jun Han, Gi-Hong Kim | 2009-11-17 |