Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6775272 | Virtual PBX system | Thomas J. Galvin, Michael Kirchner, Anthony W. S. Moey, Mark O'Brien | 2004-08-10 |
| 6766001 | Process and apparatus for messaging upon incomplete call | — | 2004-07-20 |
| 6697474 | Systems and methods for receiving telephone calls via instant messaging | Mark O'Brien, Tony Moey, Mike Kirchner, Tom Galvin, Donald J. Maurer +1 more | 2004-02-24 |