Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9060076 | Methods and systems for managing a call session | William Marczak | 2015-06-16 |
| 8462915 | Methods and systems for managing a call session | William Marczak | 2013-06-11 |
| 8036342 | Methods and systems for providing foreign call back number compatibility for VoIP E9-1-1 calls | Anne-Marie B. Darr | 2011-10-11 |
| 7756253 | Methods and systems for providing foreign call back number compatibility for VoIP E9-1-1 calls | Anne-Marie B. Darr | 2010-07-13 |
| 7573982 | Methods and systems for managing a call session | William Marczak | 2009-08-11 |