Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8762248 | Purchasing system on internet and method thereof | Sung Yeob Lee, Tae Gyu Lee | 2014-06-24 |
| 5611183 | Wall form structure and methods for their manufacture | — | 1997-03-18 |
| 5459970 | Concrete structures and methods for their manufacture | — | 1995-10-24 |