Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5615257 | Screen-based telephone set for interactive enhanced telephony service | William V. Pezzullo, Michel J. Brisebois, Joseph B. Johns, Kenneth M. Orford, Bruce H. Tsuji +3 more | 1997-03-25 |