Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7133508 | Prepaid long distance call system and method | Ferial Parsa, Gloria E. Davy, John T. Peketz, Martin R. Marks | 2006-11-07 |
| 6748058 | Caller identification system with announcement capability | Peggy S. Schwend, Martin R. Marks, Douglas F. Reynolds, Gloria E. Davy | 2004-06-08 |
| 6549619 | Method for screening calls | Peggy S. Schwend, L. Anne Mardick | 2003-04-15 |