Issued Patents 2004
Showing 1–2 of 2 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, Robin Jeffrey 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 | Robin Jeffrey Thompson | 2004-08-24 |