Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11041574 | Jig for assembling fully welded ball valve | Joungdae Seo, Hyunseok Yun | 2021-06-22 |
| 9995403 | Ball valve with dual sealing structure | Joungdae Seo, Hyunseok Yun | 2018-06-12 |