Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699416 | Method for obtaining billing validation of directory number accounts from line identification databases in a telecommunications network | — | 1997-12-16 |
| 5487107 | Method and apparatus for processing telephone calls charged to credit cards | Richard Harris, Julie M. Ladieu-Walton, David C. McChristian | 1996-01-23 |
| 5287403 | Method and apparatus for processing telephone calls charged to credit cards | Richard Harris, Julie M. Ladieu-Walton, David C. McChristian | 1994-02-15 |