Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4642687 | Superimposition of non-visual signals upon an image signal in a video display system | Francis A. Wedgwood, Michael P. Stevens | 1987-02-10 |
| 4494001 | Detection of concealed materials | — | 1985-01-15 |