Issued Patents 2017
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9657695 | Air filter element | Klaus-Dieter Ruhland | 2017-05-23 |
| 9649585 | Filter system with sensor socket | Oliver Steins, Klaus-Dieter Ruhland | 2017-05-16 |
| 9623358 | Filter system having a support tube | Klaus-Dieter Ruhland, Reinhard Oelpke | 2017-04-18 |
| 9587598 | Filter housing and filter assembly | Klaus-Dieter Ruhland, Karlheinz Muenkel, Manfred Winter | 2017-03-07 |