Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874966 | Multivibrator circuit having compensated delay time | Gunter Hildebrandt, Karl-Heinz Rehfeldt | 1989-10-17 |
| 4851785 | Circuit arrangement for detecting whether a predetermined frequency swing is exceeded | Gunter Hildebrandt, Karl-Heinz Rehfeldt | 1989-07-25 |