Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890690 | Exhaust gas muffler for a two-stroke engine | Hartmut Fischer, Michael Wissmann, Albert Shane Dreher | 1990-01-02 |
| 4867270 | Exhaust gas muffler for a two-stroke engine | Michael Wissmann, Wilfried Muller, Helmut Zimmermann | 1989-09-19 |
| 4767161 | Safety belt arrangement | Gerhard Sedlmayr | 1988-08-30 |