Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4341949 | Electrical heating apparatus with a heating element of PTC material | Johann Magg | 1982-07-27 |
| 4324974 | Heating element assembly with a PTC electric heating element | Johann Magg | 1982-04-13 |
| 4323728 | Conversion circuit arrangement and method for switching digital encoded signals | Ola Bergman, Rolf Hagen, Juergen Harenberg | 1982-04-06 |