Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5072173 | Phase detector for mark/space modulated signals | Theo Frutiger | 1991-12-10 |
| 4864223 | Measuring transformer to measure the current flowing in an electric conductor | Andreas Joder, Thomas Seitz | 1989-09-05 |
| 4853620 | Circuit arrangement comprising multiplier circuits to find the sum of electrical power outputs for application in multi-phase electricity meters | Andreas Joder | 1989-08-01 |
| 4749941 | Circuit arrangement for a meter for measuring two electrical quantities | Robert Oldigs | 1988-06-07 |
| 4685138 | System for the display and scanning of the contents of a counter equipped with counting wheels | Gregor Antes, Paul D. Fuchs, Peter Gehr | 1987-08-04 |
| 4628251 | Precision measurement voltage transducer | — | 1986-12-09 |
| 4594547 | Mark-space amplitude modulator for measuring reactive power consumption or reactive energy consumption | — | 1986-06-10 |
| 4513274 | Current transformer for measuring instruments | — | 1985-04-23 |
| 4496932 | Current divider for current measurement in conjunction with a measurement transducer | — | 1985-01-29 |
| 4434400 | Circuit for supervising an electronic electricity meter | Jakob Widmer, Jacob De Vries | 1984-02-28 |
| 4362990 | Current- and voltage-measurement transducer | Gernot Schneider, Werner Trinkler, Eva Blazso, Jocob de Vries, Konrad Schurmann +1 more | 1982-12-07 |
| 4337438 | Pulse-width modulator circuit | Walter Guggenbuhl | 1982-06-29 |
| 4234872 | Circuit arrangement for a keyboard | — | 1980-11-18 |