Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5309512 | Call waiting deluxe feature | La Sheral Blackmon, James R. Blakley, Brenda L. Sermersheim, Kathleen C. Whildin, Diane M. Zurbriggen | 1994-05-03 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5309512 | Call waiting deluxe feature | La Sheral Blackmon, James R. Blakley, Brenda L. Sermersheim, Kathleen C. Whildin, Diane M. Zurbriggen | 1994-05-03 |