Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4247211 | Optically coded keyboard arrangement | Wolfgang Behrendt, Peter Friedemann, Bernhard Frolich, Reinhold Orzessek | 1981-01-27 |
| 4231667 | Typewriter ribbon feed mechanism | Wolfgang Behrendt, Peter Friedemann, Bernhard Frolich, Reinhold Orzessek | 1980-11-04 |