Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5329239 | Circuit for measuring a capacitance during constant charging and discharging periods | Klaus Styhler, Herbert Ziegler | 1994-07-12 |
| 5166599 | Multimeter with at least three input connections and means for preventing errors due to the selection of an incorrect input connection | Karl Hochreuther, Gunter Roppelt, Herbert Ziegler, Horst Hopfner | 1992-11-24 |
| 4510444 | Digital measuring device with liquid-crystal picture screen | Werner Haussel, Gunter Roppelt | 1985-04-09 |