Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4910514 | D/A converter | Heimbert Irmer | 1990-03-20 |
| 4428267 | Digital semiconductor circuit for an electronic organ | Helmut Rosler, Josef Dempf, Klaus-Dieter Bigall | 1984-01-31 |
| 4366396 | Semiconductor circuit for transforming sequences of periodic a-c signals | Helmut Rosler, Klaus-Dieter Bigall | 1982-12-28 |