Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5682313 | Method for localization of beacons for an autonomous device | Rolf Berlin, Charles R. Davidsson | 1997-10-28 |
| 5081738 | Motor speed signal transmitter for a vacuum cleaner | Mikael A. W. Schiller, Per A. Melin | 1992-01-21 |
| 5072484 | Vaccum cleaner suction control | — | 1991-12-17 |