Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5966434 | System and method for managing feature interaction of telephone services | Steven Valin, Timothy Marc Weinrich, Gregory M. Fisher, Douglas Beck | 1999-10-12 |
| 5949870 | System and method for providing local number portability service | John D. Hayduk, James A. Bajzath, Patricia Huang | 1999-09-07 |