Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8081623 | Packet network based emergency backup telephone system | Ian Loren Halpern, Joseph Siegrist | 2011-12-20 |
| 7466689 | Packet network based emergency backup telephone system | Ian Loren Halpern, Joseph Siegrist | 2008-12-16 |