Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6810120 | Method of determining answer supervision at a line appearance of a public switch telephone network | Michael J. Elder, Joseph Kott, Raymond L. Ruggerio, Jane Ann Thompson, Kimberly Sue Tomasko-Dean | 2004-10-26 |
| 6782268 | Method and apparatus for tracking call history for mobile and wireline users accessing the network on different ports for subsequent calls | Jane Ann Thompson | 2004-08-24 |
| 6771748 | Controlling customized announcements to subscribers and responses thereto in a telecommunication system | David Gerard Parker, Mark A. Ristich | 2004-08-03 |