Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9345851 | Direction switching valve unit and cough assisting device using the same | Chil Hwan Kim | 2016-05-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9345851 | Direction switching valve unit and cough assisting device using the same | Chil Hwan Kim | 2016-05-24 |