| Title | No. | Registration Date |
Expiration Date |
|---|---|---|---|
| STRUCTURE FOR FIXING CONNECTION OF THE BRIDGE AND FIXING METHODS USING FORMER STRUCTURE | 10-1520000 | 2015-05-07 | 2033-06-28 |
| GIRDER FORMATION METHODS USING FORMER MOLD | 10-1519999 | 2015-05-07 | 2033-06-28 |
| Vertical wall structure and construction method using the same | 10-1410784 | 2014-06-17 | 2033-01-25 |
| Upper structure of multiplex box girder type bridge and constructing method for the same | 10-1402041 | 2014-05-26 | 2032-10-22 |
| Upper structure of multiplex box girder type bridge and constructing method for the same | 10-1415290 | 2014-06-27 | 2032-10-22 |
| APPARATUS FOR DISMANTLING BUILDING SLATE ROOF | 10-1331184 | 2013-11-13 | 2032-07-12 |
| Stormwater Management Facility using a Separation Device with Floating Ball | 10-1375319 | 2014-03-11 | 2032-06-29 |
| A Cavern Pillar Structure using Girders and Prestressed Panels | 10-1286306 | 2013-07-09 | 2032-06-29 |