Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8056262 | Shoe system with a resilient shoe insert | Wilhelm Ove Lindqvist, Leif Lindh, Kjell Lindh | 2011-11-15 |
| 6062270 | Double-walled structure in a ventilation duct system | Kent Hultberg, Teuvo Ranta | 2000-05-16 |
| 4333485 | Water-based cleaning system | Tom O. B. Karlsson | 1982-06-08 |