Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4907316 | Device for disinfecting rooms and floor coverings | — | 1990-03-13 |
| 4601082 | Vacuum cleaner | — | 1986-07-22 |
| 4580311 | Protective device for dust collecting devices | — | 1986-04-08 |
| 4535209 | Pressure-sensitive electrical switch | — | 1985-08-13 |
| 4514874 | Device for automatically controlling the suction power of a vacuum cleaner | — | 1985-05-07 |
| 4481692 | Operating-condition indicator for vacuum cleaners | — | 1984-11-13 |
| 4233597 | Device indicating a state due to the pressure modification | — | 1980-11-11 |