Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5751792 | System and method for providing a message system subscriber with a roaming mailbox | Edward D. Eng, Henry Shen, Agnes C. Tow, Gang Yang | 1998-05-12 |
| 5333180 | Call message delivery system and method utilizing caller-selected system announcements | Percy B. Brown, Tung-Hai Hsiao, Georg K. Karawas, Richard E. LeCronier, Dawn R. Parrott +2 more | 1994-07-26 |
| 5187710 | Method and apparatus for the billing of value-added communications calls | Reuben D. Hauptman, David D. Kaufman, Barbara Joanne Kittredge, Pamela J. Lauber, Patricia Lindblad | 1993-02-16 |
| 4972461 | Call message delivery system and method | Percy B. Brown, Tung-Hai Hsiao, Georg K. Karawas, Richard E. LeCronier, Dawn R. Parrott +2 more | 1990-11-20 |
| 4939771 | Attendant-controlled call message delivery system and method | Percy B. Brown, A. R. Gore, Tung-Hai Hsiao, Georg K. Karawas, Richard E. LeCronier +4 more | 1990-07-03 |