Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8082947 | Separable ball valve apparatus and ball valve assembly | Chul-Hwa Song | 2011-12-27 |
| 7967026 | Coupling and decoupling assembly of pipe having double valve | Sang Ki Moon, Seok Cho, Bok Deuk Kim | 2011-06-28 |