Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6284136 | Apparatus for cleaning a filter surface | Hannu Sekki, Jorma Ihalainen, Pentti Pirkonen, Hannu Mursunen | 2001-09-04 |
| 6217782 | Combined ultrasonic cleaning and washing of filter disks | Hannu Sekki, Jorma Ihalainen, Pentti Pirkonen, Hannu Mursunen | 2001-04-17 |