Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6735286 | Telephone system integrated text based communication processes, apparatus and systems | Frederic W. Hansen, Robert Jason Bonner | 2004-05-11 |
| 6430174 | Communication system supporting simultaneous voice and multimedia communications and method of operation therefore | Frederick W. Hansen | 2002-08-06 |
| 6002749 | Telephone system integrated text based communication apparatus and systems to establish communication links to TDD and/or TTY devices and other telephone and text server systems | Frederick W. Hansen | 1999-12-14 |