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, Raymond L. Ruggerio, Jane Ann Thompson, Robin Jeffrey Thompson, Kimberly Sue Tomasko-Dean | 2004-10-26 |
| 6724780 | Voice frequency data enhancement method | Arupjyoti Bhuyan, Gerald R. Boyer, Ronald R. Brown, Eric A. Deichstetter, Jeffrey Louis Duffany +7 more | 2004-04-20 |