Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4436962 | Call coverage arrangement | Richard A. Davis, Susan K. Harris | 1984-03-13 |
| 4436963 | Implied principal addressing in a call coverage arrangement | Jennie L. Cottrell, Richard A. Davis, Susan K. Harris, John Y. Payseur | 1984-03-13 |