Issued Patents All Time
Showing 26–50 of 59 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6109467 | Closure cap for an operating fluid container | Harald Schliemann, Michael Marz, Savino Petruzzelli, Matthias Fleischer, Siegfried Wilhelm | 2000-08-29 |
| 6089885 | Spark plug connector | — | 2000-07-18 |
| 6079582 | Tank closure for the fill opening of a fuel tank | Harald Schliemann | 2000-06-27 |
| 5725016 | Pressure compensating valve for a fuel tank | — | 1998-03-10 |
| 5636444 | Cutting device with frictional brake having a servo device with switching device for cancelling the braking effect | — | 1997-06-10 |
| 5522143 | Tensioning arrangement for a saw chain of a motor-driven chain saw | Harald Schliemann, Werner Geyer, Helmut Zimmermann, Rudolf Krebs | 1996-06-04 |
| 5503649 | Air filter for an internal combustion engine | — | 1996-04-02 |
| 5447131 | Ignition circuit for an internal combustion engine | Thomas Schuster, Michael Wissmann | 1995-09-05 |
| 5419686 | Fuel pump for an internal combustion engine | Michael Wissmann, Roland Schierling, Roland Adam, Werner Geyer | 1995-05-30 |
| 5392747 | Circuit for supplying voltage to a microprocessor in an ignition circuit for an internal combustion engine | Thomas Schuster | 1995-02-28 |
| 5375463 | Arrangement for assisting an operator to adjust a carburetor | Thomas Schuster | 1994-12-27 |
| 5365893 | Fuel-injection arrangement for an internal combustion engine | Michael Wissmann, Roland Schierling, Roland Adam, Werner Geyer | 1994-11-22 |
| 5358062 | Portable handheld drilling apparatus | Klaus-Martin Uhl, Helmut Zimmermann, Rudolf Krebs, Harald Schliemann | 1994-10-25 |
| 5353754 | Fuel-injection arrangement for an internal combustion engine | Michael Wissmann, Roland Schierling, Roland Adam, Manfred Thaiss, Werner Geyer | 1994-10-11 |
| 5281086 | Pump for viscous fluids | Michael Wissmann, Roland Schierling, Werner Geyer | 1994-01-25 |
| 5209196 | Operating-mode position selector arrangement for internal combustion engine | Michael Wissmann | 1993-05-11 |
| 5197418 | Fuel injection pump for a two-stroke engine | Michael Wissmann, Ralf Tuckermann, Werner Geyer | 1993-03-30 |
| 4979477 | Ignition circuit for a two-stroke engine | Michael Wissmann | 1990-12-25 |
| 4976246 | Fuel-injection pump arrangement for a two-stroke engine of a handheld portable tool | Roland Schierling, Michael Wissmann, Werner Geyer | 1990-12-11 |
| 4938660 | Pump for viscous fluids | Karsten Schone, Werner Geyer, Roland Schierling | 1990-07-03 |
| 4819779 | Centrifugal clutch | Michael Wissmann, Horst Scholz | 1989-04-11 |
| 4813391 | Arrangement for injecting fuel for a two-stroke engine | Werner Geyer, Roland Schierling | 1989-03-21 |
| 4807573 | Fuel injection arrangement for a two-stroke engine | Roland Schierling, Werner Geyer, Michael Wissmann | 1989-02-28 |
| 4773362 | Automatic starting arrangement for an internal combustion engine | Michael Wissmann, Jurgen Weber | 1988-09-27 |
| 4709669 | Ignition arrangement for an internal combustion engine of a handheld portable tool | Michael Wissmann, Jurgen Weber | 1987-12-01 |