Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5689440 | Voice compression method and apparatus in a communication system | Clifford D. Leitch, Robert J. Schwendeman, Kazimierz Siwiak, Sunil Satyamurti | 1997-11-18 |
| 5689805 | Communication system and method providing minimum message transmission delay | Douglas I. Ayerst, Robert J. Schwendeman | 1997-11-18 |
| 5668923 | Voice messaging system and method making efficient use of orthogonal modulation components | Kazimierz Siwiak, Sunil Satyamurti | 1997-09-16 |
| 5627528 | Selective call receiver capable of suspending acknowledge-back signals and method therefor | — | 1997-05-06 |
| 5625351 | Messaging system having roaming capability | David F. Willard, Barbara Diaz Laflin, Mark H. Aronson, Eric Thomas Eaton | 1997-04-29 |