Patents per Year
Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5012738 | Printing plate locking device | — | 1991-05-07 | $6,223,000 |
| 4638758 | Capped printing plate making machine | — | 1987-01-27 | $16,619,000 |
| 4450226 | Method and apparatus for producing a printing plate | — | 1984-05-22 | $2,896,000 |
| 4403566 | Apparatus for producing a printing plate | — | 1983-09-13 | $3,392,000 |
| 4383759 | Method and apparatus for producing a capped printing plate | Norman E. Hughes | 1983-05-17 | $10,638,000 |