Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9351616 | Apparatus for cleaning a glass window and method for controlling the movement thereof | Man Hyun Ryu, Young Ho Choi | 2016-05-31 |
| 8826482 | Window cleaning apparatus and method for controlling movement thereof | Man Hyun Ryu, Young Ho Choi | 2014-09-09 |