Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8593993 | Method and apparatus for self-learning of call routing information | Christine Clark, Sekar Ganesan, Richard J. Sullivan | 2013-11-26 |
| 8305926 | Method and apparatus for self-learning of call routing information | Christine Clark, Sekar Ganesan, Richard J. Sullivan | 2012-11-06 |
| 6252943 | Telephone network having dual gateway interconnection architecture for handling emergency services | Eugene M. Kancianic, Maria Walsh, Walter Paul Zahray | 2001-06-26 |
| 5905791 | Method and apparatus for providing combined communication services including local service and toll service | Anurag Goel, Nadine Guillaume, Robert Yaeger Peters Jr., Theodore Vagelos, Walter Paul Zahray | 1999-05-18 |