Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4476349 | Call message service | Deborah Hill | 1984-10-09 |
| 4436963 | Implied principal addressing in a call coverage arrangement | Richard A. Davis, Susan K. Harris, Bernard R. Jones, John Y. Payseur | 1984-03-13 |