Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10138918 | Fastening device | Byeong-Kwan Na | 2018-11-27 |
| 9617701 | Multi-stage extending ground anchor assembly | Byeong-Kwan Na | 2017-04-11 |
| 9404258 | Reinforcing bar connector | Byeong-Kwan Na | 2016-08-02 |
| 8331649 | LED testing apparatus and testing method thereof | Won Soo JI, Wook Hee Lee, Ho-Young Song, Chong Wook Cho, Sung Jae Kim +1 more | 2012-12-11 |
| 7889326 | Distance measuring apparatus | Dong Ik Shin, Hong Ki Kim, Back Kue Lee | 2011-02-15 |
| 7317422 | Built-in antenna assembly of wireless communication terminal | Wook Hee Lee, Sun Kyu Han | 2008-01-08 |