Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7693137 | Multi-line appearance telephony via a computer network | Steven E. Gardell, Israel B. Zibman | 2010-04-06 |
| 7116656 | Multi-line appearance telephony via a computer network | Steven E. Gardell, Israel B. Zibman | 2006-10-03 |