Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5219130 | Hub lock for video cassette | — | 1993-06-15 |
| 5173827 | Method and apparatus for cleaning portions of a video cassette recorder | — | 1992-12-22 |
| 5143209 | Automatic extension cassette container | — | 1992-09-01 |
| 5047887 | Method and apparatus for cleaning the tape head and tape path of a video cassette recorder using a wetted cleaning tape | — | 1991-09-10 |