Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9783392 | Elevator door stopping device | Jung Sam Kim, Jinkoo Lee, JinKyu Ryu | 2017-10-10 |
| 9731941 | Braking device for a door operator | Jinkoo Lee, Jung Sam Kim, Byeong Sam Yoo, Guohong Hu, Mark S. Thompson | 2017-08-15 |