Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4937862 | Remote monitoring device | — | 1990-06-26 |
| 4924488 | Multiline computerized telephone monitoring system | — | 1990-05-08 |
| 4815120 | Computerized telephone monitoring system | — | 1989-03-21 |
| D278811 | Loud speaker | Jeffrey N. White, Norman Levenstein | 1985-05-14 |