Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6747954 | Asynchronous transfer mode switch providing pollstate status information | Lars-Goran Petersen | 2004-06-08 |
| 5995616 | Apparatus for communication between a telephone exchange and connected telephone sets | Anders Lindström, Anna Kristina Bostrom | 1999-11-30 |
| 5446781 | Testing of subscriber lines in a digital switch | Anders Lindström, Anna Kristina Bostrom | 1995-08-29 |
| 4440595 | Apparatus for concentrating mineral acids | — | 1984-04-03 |
| 4354899 | Device for concentration and possible purification of mineral acids, particularly sulphuric acid | Lars Douren, John Troeng | 1982-10-19 |
| 4269655 | Device for concentration of mineral acids, particularly sulphuric acid | Lars Douren, John Troeng | 1981-05-26 |
| 4243477 | Device for an installation of a quartz tube in a device for concentration of mineral acids | Lars Douren | 1981-01-06 |