Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10975561 | Method and device for controlling ventilation amount with respect to sealed pipe | Yong Sog Kwon, Shi Cheal Shin, Kyu Chui Jung | 2021-04-13 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10975561 | Method and device for controlling ventilation amount with respect to sealed pipe | Yong Sog Kwon, Shi Cheal Shin, Kyu Chui Jung | 2021-04-13 |