Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6707016 | Method of increasing the length of life of heating elements at low temperatures | — | 2004-03-16 |
| 6683281 | Means and method for heating | Lars-Goran Johansson, Helena Johansson, Jan-Erik Andersson | 2004-01-27 |