Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6160878 | Automatic international redial disablement and status delivery method and apparatus | Shubert A. Hau, A. Helen McGrath, Christine Patricia Peterson | 2000-12-12 |
| 6038307 | International redial system driven by unsuccessful call reasons | Harold Fahrer, Shubert A. Hau, A Helen McGrath, Johan Adriaan Oudmaijer, Christine Patricia Peterson | 2000-03-14 |
| 5946380 | Communications system and method with call expenditure control | Steve L. Cohen, Michael Davitt, Leonard Matulewski, Kathleen T. Quinn, Usha Rao | 1999-08-31 |