Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7383801 | Valve gear for load change valves of internal combustion engines | Jörg Wutzler | 2008-06-10 |
| 6082312 | Hand-guided appliance with an internal combustion engine with direct electronic injection | Andreas Singer, Jochen Schoenhaar, Klaus Matthees, Peter Schulz, Uwe Mehlhose | 2000-07-04 |
| 4505454 | Check valve | — | 1985-03-19 |
| 4243204 | Valve housings made from steel, especially for gate valves | — | 1981-01-06 |