Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6546687 | Waterproofing method by using plastic panels | Sang Keun Oh, Sung Min Choi | 2003-04-15 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6546687 | Waterproofing method by using plastic panels | Sang Keun Oh, Sung Min Choi | 2003-04-15 |