Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6415024 | System and method for special call detection and billing treatment | James Patrick Dunn, Don Howard Dvorak, Mark Alan Lassig, Eugene J. Rosenthal | 2002-07-02 |
| 6373229 | Battery charging system for portable electronic devices | — | 2002-04-16 |
| 6014011 | Battery charging system for portable electronic devices | Richard DeFelice | 2000-01-11 |
| 6009138 | Lap counting | — | 1999-12-28 |
| 5487111 | Telecommunications system sequence calling | — | 1996-01-23 |
| 5440615 | Language selection for voice messaging system | John A. Caccuro | 1995-08-08 |
| 5440620 | Telecommunications system subscriber profile updating | — | 1995-08-08 |
| 5267304 | Directory assistance system | — | 1993-11-30 |