Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10639652 | Dust collector and cleaner having the same | Kietak Hyun, Sangchul Lee | 2020-05-05 |
| 10575695 | Vacuum suctioning unit | Jeongho Lee, Sangchul Lee, Taekyung Kim, Younggyu JUNG | 2020-03-03 |