Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4991247 | Method of balancing a container which rotates about an essentially horizontal axis | Lennart W. Castwall, Pekka O. Alkuvaara | 1991-02-12 |
| 4390325 | Pump driven by the radiation energy of the sun | Ari Elo | 1983-06-28 |