Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9144297 | Rotating toothbrush | Jong Chan Park, Jung Wan Woo, Jung Tak Woo | 2015-09-29 |
| 9138303 | Rotary toothbrush | Jong Chan Park, Jung Wan Woo, Jung Tak Woo | 2015-09-22 |
| 8813300 | Rotary toothbrush | Jung Wan Woo, Jung Tak Woo, Jong Chan Park | 2014-08-26 |