Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11571972 | Detection of maintenance status for a pantograph and/or a contact wire | — | 2023-02-07 |
| 9395276 | Method and system for detection and analysis of railway bogie operational problems | Helmuth Kristen, Jack R. Long | 2016-07-19 |
| 7232497 | Method and device for filling a cavity between two plates of fire-resisting composite glass | Anders Lindberg | 2007-06-19 |
| 6821435 | Water purifying system | Jan Olov Sparrman | 2004-11-23 |