Issued Patents 2020
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10769906 | Doorbell, security system including doorbell apparatus, and method of operating the same | Kiyong Jeon, SeokYong Yoon | 2020-09-08 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10769906 | Doorbell, security system including doorbell apparatus, and method of operating the same | Kiyong Jeon, SeokYong Yoon | 2020-09-08 |