Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4577200 | Cassette for the ink jet printer of an office machine | Horst Martens, Dieter Drogi, Klaus-Dieter Frerichs, Wolfgang Leschik | 1986-03-18 |
| 4500219 | Method and apparatus for guiding the paper in typewriters or similar office machines | Heinz Lange, Dieter Drogi | 1985-02-19 |
| 4294556 | Guide for record carrier in printers | — | 1981-10-13 |
| 4200402 | Carriage guide for typing element carrier | — | 1980-04-29 |