Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4743133 | Inked ribbon cartridge | — | 1988-05-10 |
| 4630948 | Inked ribbon cartridge | — | 1986-12-23 |
| 4250513 | Linear vertical adjustment mechanism | James L. Harlow | 1981-02-10 |
| 4197797 | Modular high speed printing system | Wilson P. Rayfield, Norman H. Preston, Ronald Worden Ferguson, Frederick H. Dear, Henry M. Korytkowski +1 more | 1980-04-15 |