Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5946380 | Communications system and method with call expenditure control | Steve L. Cohen, Michael Davitt, Leonard Matulewski, Alan B. Moshinsky, Kathleen T. Quinn | 1999-08-31 |
| 5583564 | Intelligent call forwarding with videophone display of forwarding destination | Robert M. Rubin | 1996-12-10 |
| 4939771 | Attendant-controlled call message delivery system and method | Percy B. Brown, Nga V. Chau, A. R. Gore, Tung-Hai Hsiao, Georg K. Karawas +4 more | 1990-07-03 |