Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11302341 | Microphone array based pickup method and system | Fan Lichun, Gao Peng | 2022-04-12 |
| D505530 | Digital keypad for a safe | Scott Nelson, George Oelschig, Huang Ji | 2005-05-24 |