Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8026468 | Projection display apparatus comprising a spatial-beam changing unit which changes spatial positions of beams | Young-chol Lee, Sang Hyun SOHN, Yong-dok Cha | 2011-09-27 |
| 7929216 | Collimate lens assembly | Young-chol Lee | 2011-04-19 |