Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4297591 | Electronic counter for electrical digital pulses | Helmut Roesler | 1981-10-27 |
| 4291221 | Digital semiconductor circuit | Klaus-Dieter Bigall, Helmut Roessler | 1981-09-22 |
| 4182211 | Information transmission system | Klaus-Dieter Bigall, Helmut Roesler | 1980-01-08 |