Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4231656 | Apparatus and method of converting an image on a transparency to line art on a recording medium | Fred M. Dickey, James Crill | 1980-11-04 |
| 4188533 | Window transmittance tester | Ernest W. Ashenfelter, Fred M. Dickey | 1980-02-12 |