Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11255319 | Shaft-cylinder assembly for high temperature operation | Kyong Tae Chang | 2022-02-22 |
| 11230079 | High pressure barrel | Kyong Tae Chang | 2022-01-25 |
| 10364891 | Method and apparatus for making helical coil spring type seal | — | 2019-07-30 |