Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5978454 | Method and instructions for fax mail user interface | Cynthia Lea Humphrey, John R. Rice, Steven John Langkamp, Sandra Marie Smith | 1999-11-02 |
| 4899377 | Communication terminal telephone directory with dynamic directory tabbing | Eric J. Bauer, Esther L. Davenport, Mary Kinal | 1990-02-06 |
| 4477697 | Method and circuitry for encoding telephone ringing signals | Thomas H. Judd, Edmund T. Klemmer, Martin H. Singer | 1984-10-16 |