Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5574317 | Device for compensation of an alternating voltage which occurs between a medium and a metallic pipeline disposed in the medium | Dan Karlsson | 1996-11-12 |
| 5541459 | Device for compensation of an alternating voltage which occurs between a medium and a metallic pipeline disposed in the medium | Dan Karlsson | 1996-07-30 |