Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6575253 | Automatic hammer system for standard penetration test | Il Yeong Han, Bum-Sang Kim | 2003-06-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6575253 | Automatic hammer system for standard penetration test | Il Yeong Han, Bum-Sang Kim | 2003-06-10 |