Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698098 | Oil filter housing including a valved drain opening | Volker Ernst, Rudolf Leipelt | 1997-12-16 |
| 5695633 | Oil filter support tube and housing cover with snap detent connection therebetween | Volker Ernst, Herbert Jainek | 1997-12-09 |
| 5622583 | Method of producing a filter insert | Volker Ernst, Michael Kolmeder, Bernhard Wimmer | 1997-04-22 |