Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6608887 | Voice messaging system with ability to prevent hung calls | Jonathan Paul Davis | 2003-08-19 |
| 6396909 | Inter-system call transfer | Jonathan Paul Davis, Kathleen G. Elliot | 2002-05-28 |