Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9255797 | Light sensor holder for tracking location of sunlight | Joo-Sik Yoon | 2016-02-09 |
| 8822909 | Optical sensor holder for tracking location of sunlight | Joo-Sik Yoon | 2014-09-02 |