Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6198366 | Tuning device and method of manufacturing the same | Torbjorn Dahl | 2001-03-06 |
| 5026535 | Method for decoloring sulphuric acid deriving from acid production processes | Jan L. Jonsson | 1991-06-25 |