Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5896447 | Method for accommodating ported directory numbers affected by call block controls implemented in a telecommunications network | Jean Marie Bunge, Susan Maureen Harrigan, John Russell, Barbara Joan Schlaman, Susan Marie Trebs | 1999-04-20 |
| 5442689 | Apparatus and method for providing services prior to call completion in a telecommuncation system | Anthony Buttitta, Eric A. Duesing, Mark O. Rosstedt, Liane Toy Tsai | 1995-08-15 |
| 5033076 | Enhanced privacy feature for telephone systems | William C. Jones, Eric T. Larsen, Elizabeth M. Mazur | 1991-07-16 |