Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5177433 | Current-voltage transformer for electronic house-service meter | Manfred Schwendtner, Wolfgang Dohmstreich | 1993-01-05 |
| 4454471 | Electronic arrangement for determination of reactive power | Manfred Schwendtner | 1984-06-12 |
| 4378524 | Electronic three-phase watt-hour meter | — | 1983-03-29 |
| 4254376 | Apparatus for measuring the electric power or energy in an A-C network | — | 1981-03-03 |
| 4215413 | Measuring device for integral values formed over a time span | Reinhard Stark | 1980-07-29 |