Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7987826 | Variable valve lift apparatus | Young Hong Kwak, Kiyoung Kwon, Jin Kook Kong | 2011-08-02 |
| 7918202 | Variable valve lift apparatus | Young Hong Kwak, Kiyoung Kwon, Jin Kook Kong, Kyoung Joon Chang | 2011-04-05 |