Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5050021 | Expanded micro cassette player-recorder | Stephen K. Shu, Robert C. Beauchamp | 1991-09-17 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5050021 | Expanded micro cassette player-recorder | Stephen K. Shu, Robert C. Beauchamp | 1991-09-17 |