Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886380 | Piezoelectric controlled electromagnetically driven printing | — | 1989-12-12 |
| 4840504 | Printer ribbon cartridge with means for transversely displacing ribbon during advance | Anthony Graziano, Kenneth Kress | 1989-06-20 |