Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4910670 | Sound generation and disk speed control apparatus for use with computer systems | Andrew J. Hertzfeld | 1990-03-20 |
| 4445414 | Digital, simultaneous, discrete frequency generator | — | 1984-05-01 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4910670 | Sound generation and disk speed control apparatus for use with computer systems | Andrew J. Hertzfeld | 1990-03-20 |
| 4445414 | Digital, simultaneous, discrete frequency generator | — | 1984-05-01 |