Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5422667 | Ink jet printing cartridge with circuit element protection system | Donald C. Ulry, Mark Drake | 1995-06-06 |
| 5354138 | Self adjusting, low torque ribbon drive system | — | 1994-10-11 |
| 5249874 | Ribbon cartridge | — | 1993-10-05 |
| 5122002 | Ribbon cartridge with correction cartridge lock-out circumvention power switch projection | — | 1992-06-16 |
| 5069563 | Ribbon cartridge mounting movable power switch tab | — | 1991-12-03 |