Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4544292 | Multistrike ribbon | Hans Paffhausen | 1985-10-01 |
| 4515489 | Overstrike ribbon for print wheels | Hans Paffhausen | 1985-05-07 |
| 4427739 | Multiuse pressure-type reproduction material | Hans Paffhausen, Claus Hartmann | 1984-01-24 |
| 4389449 | Carbon film | Hans Paffhausen | 1983-06-21 |