Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853698 | Process for the digital to analog conversion of digital information in bipolar analog signals | — | 1989-08-01 |
| 4820998 | Operational amplifier | Eberhard Wolter | 1989-04-11 |
| 4814637 | Pulse shaper | Eberhard Wolter | 1989-03-21 |