Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6976081 | Session initiation protocol compression | Peter J. Armbruster, Bradley Schaefer, Mark L. Shaughnessy | 2005-12-13 |
| 6904023 | Method and apparatus for group call services | Nandakishore A. Albal, Peter J. Armbruster, Thomas Hallin, Derek Oxley, William N. Shores +1 more | 2005-06-07 |