Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6966144 | Device and use in connection with measure for combating | Per-Åke Hallberg, Lennart Carlsson, Fredrik Engman | 2005-11-22 |
| 6491231 | Method to make snow for insect control and device for making the same | Per-Åke Hallberg | 2002-12-10 |