Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5629816 | Tape cartridge gripper mechanism | Petter Busengdal | 1997-05-13 |
| 5440435 | Cartridge manipulation and reference system for magnetic tape recorder | Petter Busengdal | 1995-08-08 |
| 5236146 | Capstan belt drive | Guttorm Rudi, Nils Martin Teien, Bjorn Auke | 1993-08-17 |
| 4636890 | Magnetic tape recorder | Guttorm Rudi | 1987-01-13 |