Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6676720 | Filter unit for filtering gas | — | 2004-01-13 |
| 6332902 | Filter unit having a filter cleaning nozzle associated with the filter unit and including a guide body | Ove Emil Hansen | 2001-12-25 |