Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11991317 | Extension mobility for analog telephones | Haitao Zhang, Jing Li, Ming Lin Chen, Nanditha Shenoy | 2024-05-21 |
| 7471671 | Band signal detection and presentation for IP phone | Ying Xiong, Chih-Ping Lee | 2008-12-30 |