Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4665302 | Electrical heating element | — | 1987-05-12 |
| 4650960 | Electrical heating foil element | — | 1987-03-17 |
| 4501956 | Electrical resistance heating element | Eilif Risberg | 1985-02-26 |
| 4363947 | Electrical heating element | — | 1982-12-14 |
| 4354886 | Method for making electrical heating mats from an expanded foil-insulation composite | — | 1982-10-19 |