Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5333180 | Call message delivery system and method utilizing caller-selected system announcements | Nga V. Chau, Tung-Hai Hsiao, Georg K. Karawas, Richard E. LeCronier, Dawn R. Parrott +2 more | 1994-07-26 |