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| No. | Title of the device | Registration Number | Reg. Date | 
|---|---|---|---|
| 19 | Direction signs in subway stations | No. 223122 | 2002.02.26 | 
| 18 | Emergency door that can be opened easily in case of fire (lever type) | No. 259221 | 2001.12.04 | 
| 17 | Emergency door that can be opened easily in case of fire (button type) | No. 257655 | 2001.12.04 | 
| 16 | Removable joint pipe for drainage pipe connection | No. 257088 | 2001.11.29 | 
| 15 | Safe stopping road in case of brake failure on the slope | No. 255923 | 2001.11.19 | 
| 14 | Prefabricated retaining wall blocks | No. 230765 | 2001.05.04 | 
| 13 | Road shock-absorbing vehicle collision prevention device | No. 229403 | 2001.04.21 | 
| 12 | Lamp block for underground parking lot | No. 228232 | 2001.04.11 | 
| 11 | Crosswalk block | No. 227584 | 2001.04.04 | 
| 10 | Road impact relief type local damage repair structure | No. 227573 | 2001.04.04 |