Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6837203 | Automatic decompression device for valve-controlled internal combustion engines | Jan Schempp, Thomas D. Schaal | 2005-01-04 |
| 6807936 | Oil pressure control valve by sliding camshaft for an internal combustion engine | Eberhard Wizgall, Jan Schempp, Reinhard Kasperbauer | 2004-10-26 |
| 6694942 | Four-stroke engine with rotary valve control | Rainer Massmann, Bernhard Auler | 2004-02-24 |
| 6659064 | Compact four-stroke combustion engine, especially for the use in a portable working device | Rainer Massmann, Bernhard Auler, Eberhard Witzgall | 2003-12-09 |
| 6393835 | Exhaust muffler comprising a catalytic converter | Gerhard Stoll, Gustav Wölpert, Thomas Rieger, Ronald Hotz, Bernhard Durr | 2002-05-28 |
| 5996732 | Muffler for a two-stroke internal combustion engine | Gerhard Stoll | 1999-12-07 |