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| No. | Title of the device | Registration Number | Reg. Date |
|---|---|---|---|
| 29 | Prefabricated Revetment Foundation Block | No. 413470 | 2006.04.03 |
| 28 | Small river bottom sludge removal device | No. 412878 | 2006.03.27 |
| 27 | Aquatic Plant Block to protect fishes in the fast flowing river bottom | No. 411934 | 2006.03.14 |
| 26 | A Device preventing spread of Wastewater odor of rivers, and backflowing in floods for Road and Residential... | No. 356591 | 2004.07.07 |
| 25 | X-type block for river bank protection | No. 327423 | 2003.09.09 |
| 24 | River bank protection block installed on slopes | No. 327422 | 2003.09.09 |
| 23 | Vegetation box block for protection of River ecosystem | No. 327421 | 2003.09.09 |
| 22 | Protection device installation structure for the installation on slopes of Ecological river Embankment | No. 327419 | 2003.09.09 |
| 21 | Gabion structure to prevent loss of river embankment | No. 327420 | 2003.09.09 |
| 20 | A river slope protection block that prevents soil loss, and provides access stairs and seats. | No. 297241 | 2002.11.26 |