Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7720204 | Method of establishing a communications call | Calvin J. Stein, Carlos Escobar | 2010-05-18 |
| 6324264 | Method of establishing a communications call | Calvin J. Stein, Carlos Escobar | 2001-11-27 |