Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855827 | Method of providing identification, other digital data and multiple audio tracks in video systems | — | 1989-08-08 |
| 4839743 | Interactive video and audio controller | David Claybaugh | 1989-06-13 |