Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4599719 | Full duplex data set with half-duplex emulation | Robert A. Day, Victor B. Lawrence, Michael R. Zboray | 1986-07-08 |
| 4388697 | Voiceband data set circuitry with dual bus architecture | Henry R. Goldenberg | 1983-06-14 |