Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6760422 | Apparatus and method for providing conference call service | Bijay K. Roy | 2004-07-06 |
| 6690786 | Telephone system having multiple administrators of switching system resources | Mary Rita Otto | 2004-02-10 |