Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4773655 | Slide ring seal | Markku Lummila, Esa Salovaara, Esko Lopperi, Juhani Ljokkoi | 1988-09-27 |
| 4700953 | Slide-ring seal | Esko Lopperi, Markku Lummila, Pertti Saksala, Esa Salovaara, Tuomo Suhonen | 1987-10-20 |