Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4490059 | Ribbon metering device | — | 1984-12-25 |
| D272544 | Ribbon cartridge | — | 1984-02-07 |
| 4400103 | Universal ribbon cartridge | — | 1983-08-23 |
| 4369884 | Ink ribbon cartridge pack | — | 1983-01-25 |
| 4367963 | Refillable typewriter ribbon cartridge | — | 1983-01-11 |
| 4307969 | Universal ribbon cartridge | — | 1981-12-29 |