Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4297729 | Encoding and decoding of digital recordings | Frederick A. Hayes | 1981-10-27 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4297729 | Encoding and decoding of digital recordings | Frederick A. Hayes | 1981-10-27 |