Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10415712 | Air admittance valve preventing mephitis overflow | Chao-Chi Chen | 2019-09-17 |
| 10274696 | Optical systems and head mounted displays | Cheng Hsiung Chou, Chang Sern GWEE | 2019-04-30 |