Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5841855 | Menu level indicator for a telephone terminal | Joanne W. Davidson, William F. Dudley, Jr., David M. Gresham, Michael L. Moroze, Elizabeth Bauer-Nilsen Sanders +1 more | 1998-11-24 |
| 5774540 | Hierarchical menu screen interface for displaying and accessing telephone terminal features | Joanne W. Davidson, William F. Dudley, Jr., David A. Fishman, David M. Gresham, Kenneth L. Kasiske +3 more | 1998-06-30 |