Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4357489 | Low voltage speech synthesis system with pulse width digital-to-analog converter | Alva E. Henderson | 1982-11-02 |
| 4310831 | Pulse width modulated, push/pull digital to analog converter | Alva E. Henderson | 1982-01-12 |