Issued Patents 2003
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6666619 | Protective wall assembly | — | 2003-12-23 |
| 6666620 | Wave dissipating block for covering a breakwater | — | 2003-12-23 |
| 6592300 | Pile apparatus and construction process of placing concrete pile in ground | Ho Sang Lee | 2003-07-15 |
| 6588978 | Block assembly for protecting embankment | — | 2003-07-08 |
| 6561730 | Covering block for decreasing wave forces | — | 2003-05-13 |
| 6547487 | Wave dissipating blocks for constructing a seawall | — | 2003-04-15 |