Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7699712 | Construction element for a bowling lane and a bowling lane | Joni Hietala, Pentti Järvelä | 2010-04-20 |
| 6988953 | Obstacle on a bowling lane | Pentti Kuoppa | 2006-01-24 |
| 6652386 | Substructure of a bowling lane | Joni Hietala | 2003-11-25 |