Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5693217 | Fluid circuit with a primary stream filter and a bypass stream centrifuge | Martin Schetter, Martin Weindorf | 1997-12-02 |
| 5661975 | Soot filtration device | Friedrich Abel | 1997-09-02 |