Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8950870 | Projection display device for projecting an input unit image | Ho Joong Kang, Seung Gyu Lee, Sang Sik Jeong | 2015-02-10 |
| 8633892 | Projection display device having a light combining unit | Ho Joong Kang, Seung Gyu Lee, Sang Sik Jeong | 2014-01-21 |