Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7657019 | System for and method of hairpinning a remote PBX or KTS or gateway phone call to a local call | Zhi-Yun Zhang, Ky Xuong Nguy, David Milne, Todd Alan Turner | 2010-02-02 |