Issued Patents 2020
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10809967 | Analog/digital audio converter and a method thereof | — | 2020-10-20 |
| 10682009 | Apparatus for extracting coffee and method for preheating heater thereof | Dong Min OH | 2020-06-16 |
| 10667643 | Coffee extraction device and method | Dong Min OH | 2020-06-02 |