Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7645964 | High frequency heat treatment method for fine bottom-closed hole | Jong Kwan Park | 2010-01-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7645964 | High frequency heat treatment method for fine bottom-closed hole | Jong Kwan Park | 2010-01-12 |