Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855554 | Arrangement in a microwave oven | Per Olov Risman | 1989-08-08 |
| 4849592 | Feeding arrangement for a microwave oven | Per Olov Risman | 1989-07-18 |
| 4816632 | Multi-resonant microwave oven having an improved microwave distribution | Per Olov Risman, Bo Wass | 1989-03-28 |