Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865671 | Prepress apparatus and method | Charles E. Ash, Siegfried H. Herliczek | 1989-09-12 |
| 4788911 | Prepress apparatus for an assembly of stacked sheets | Charles E. Ash, Siegfried H. Herliczek | 1988-12-06 |