Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6707797 | Multi-line telephony via network gateways | Steven E. Gardell, Israel B. Zibman | 2004-03-16 |
| 6457043 | Speaker identifier for multi-party conference | William I. Kwak, Steven E. Gardell | 2002-09-24 |
| 6128304 | Network presence for a communications system operating over a computer network | Steven E. Gardell, Rajiv Bhatnagar, Thomas J. Antell, Israel B. Zibman | 2000-10-03 |