Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4341949 | Electrical heating apparatus with a heating element of PTC material | Herbert Steiner | 1982-07-27 |
| 4324974 | Heating element assembly with a PTC electric heating element | Herbert Steiner | 1982-04-13 |