Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4785473 | Interactive audio telecommunications message storage, forwarding and retrieval system | Sandra S. Pfeiffer | 1988-11-15 |
| 4272649 | Processor controlled sound synthesizer | — | 1981-06-09 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4785473 | Interactive audio telecommunications message storage, forwarding and retrieval system | Sandra S. Pfeiffer | 1988-11-15 |
| 4272649 | Processor controlled sound synthesizer | — | 1981-06-09 |