Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8834086 | Threaded engagement device | Chang Hee Choi | 2014-09-16 |
| 8713983 | Rolling mill and roll thereof | Chang Hee Choi | 2014-05-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8834086 | Threaded engagement device | Chang Hee Choi | 2014-09-16 |
| 8713983 | Rolling mill and roll thereof | Chang Hee Choi | 2014-05-06 |