Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4797537 | Foil element | Rolf Berthelius | 1989-01-10 |
| 4642887 | Method of manufacturing loop-formed metal foil elements | — | 1987-02-17 |
| 4329569 | Resilient snap-on electric heating jacket for tubular objects | Bengt Hjortsberg | 1982-05-11 |