Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9862136 | Method and apparatus for spirally winding a thermoplastic profile in the manufacture of welded plastic tubes | Kari Karjalainen, Johan Portman, Sven Sjöberg | 2018-01-09 |
| 9821514 | Method and apparatus in the manufacture of a spirally wound and welded tube | Kari Karjalainen, Sven Sjöberg | 2017-11-21 |