Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6144644 | System and method for implementing call waiting functions over a network | Nilay Ghoghari, Darek A. Smyk | 2000-11-07 |
| 5949870 | System and method for providing local number portability service | John D. Hayduk, Patricia Huang, Craig Loren Schafer | 1999-09-07 |
| 5315646 | Systems and processes for providing multiple interfaces for telephone services | David L. Babson, III, Thomas C. Ely | 1994-05-24 |