Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8670441 | System and method for migrating a large scale batch of customer accounts from one VoIP system to another VoIP system | Changqing Wang, Hong Xiao, Yi-Chien Chen | 2014-03-11 |