Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6468644 | Dual-structure helmet and method of manufacturing the same | Wan-Ki Hong, Dae Ki Park, Seung Han Park | 2002-10-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6468644 | Dual-structure helmet and method of manufacturing the same | Wan-Ki Hong, Dae Ki Park, Seung Han Park | 2002-10-22 |