Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4445647 | Supply roll holding arrangement | Reinhard Deeg, Helmuth Kettenbach | 1984-05-01 |
| 4351619 | Ink ribbon cassette | Douglas Duke, Reinhold Drodofsky | 1982-09-28 |
| 4294555 | Multi-row keyboard for typewriters or similar machines | Oswald Hack | 1981-10-13 |