Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5883512 | Checking heat exchanger tubes with an eddy-current integrity test | Franz Ammann | 1999-03-16 |
| 4474058 | Air flow rate meter for an internal combustion engine | Ulrich Drews, Peter Rapps, Karl Staiger | 1984-10-02 |
| 4429234 | Threshold switch | — | 1984-01-31 |
| 4335346 | Temperature independent voltage supply | — | 1982-06-15 |
| 4300508 | Installation for operating electromagnetic loads in internal combustion engines | Walter Buxmeyer, Peter Schulzke, Klaus Harsch | 1981-11-17 |
| 4266261 | Method and apparatus for operating an electromagnetic load, especially an injection valve in internal combustion engines | Klaus Harsch, Peter Schulzke | 1981-05-05 |
| 4205635 | Fuel mixture control system | Dieter Kirn, Ulrich Steinbrenner, Hans Schnurle, Peter Werner, Ulrich Drews +2 more | 1980-06-03 |