Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837584 | Security time clock system | Richard B. Sharkey | 1989-06-06 |
| 4726864 | Hectograph master webs and sheets, and method | Albert E. Brown | 1988-02-23 |
| 4499140 | Pressure-sensitive transfer elements and method | Albert E. Brown | 1985-02-12 |
| 4409893 | Process for printing porous image | Douglas A. Newman | 1983-10-18 |