Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4649246 | Keyboard for initiating switching operations or switching signals associated with respective symbols on the surfaces of the keys | Theobald Schmid, Horst Widmaier | 1987-03-10 |
| 4531033 | Keyboard for initiating switching operations or switching signals associated with respective symbols on the surfaces of the keys | Theobald Schmid, Horst Widmaier | 1985-07-23 |
| 4188640 | Apparatus for making laminar radiograms | Jurgen Dittrich, Jurgen Heinzerling, Dietrich E. Meijer, Ralf Mollendorf | 1980-02-12 |