Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5678279 | Floor care appliance, in particular vacuum cleaning appliance, having downwardly directed bristles preferably disposed about the outer peripheral edge | Gentile Marafante, Mario Tecchiati, Thomas Braun | 1997-10-21 |
| 5353471 | Apparatus for performing work on a floor surface | Heinz-Jurgen Ahlf, Gentile Marafante, Mario Tecchiati | 1994-10-11 |
| 5259085 | Floor-care work disks which can be attached by clip mounting to the drive plate of a floor-care instrument | Gentile Marafante, Mario Tecchiati, Hans J. Birr | 1993-11-09 |
| 5221303 | Interface arrangement for a filter bag in a vacuum cleaner | Heinz-Jurgen Ahlf | 1993-06-22 |
| 5040263 | Carrying belt arrangement for a vacuum cleaner | Werner Dargel | 1991-08-20 |
| 4989295 | Telescopic guide wand for floor-cleaning appliances | Peter Hannemann, Hans J. Birr, Jurgen Jager | 1991-02-05 |
| 4961765 | Electrical vacuum cleaner and filter bag for same | Heinz-Jurgen Ahlf, Manfred Eckart | 1990-10-09 |
| 4851019 | Electric vacuum cleaner | Heinz-Jurgen Ahlf, Jurgen Jager, Peter Wulf, Manfred Eckart | 1989-07-25 |
| 4846426 | Hang-up and protective arrangement for an electrical appliance | Peter Hannemann, Uwe Kemker, Hans J. Birr | 1989-07-11 |
| 4785492 | Floor cleaning apparatus | Uwe Kemker, Wolfgang Troger, Hans J. Birr, Paul Michel, Renate Friedrichs | 1988-11-22 |
| 4696076 | Vacuum cleaner nozzle | Heinz-Jurgen Ahlf, Hans-Peter Simm, Peter Wulf | 1987-09-29 |
| 4685170 | Bristle component for a floor cleaning nozzle | Heinz-Jurgen Ahlf, Hans-Peter Simm, Peter Wulf | 1987-08-11 |
| 4538322 | Attachment nozzle for a vacuum cleaning system | Heinz-Jurgen Ahlf, Peter Wulf, Hans-Peter Simm | 1985-09-03 |
| 4489620 | Drive unit for a cleaning device | Hans-Peter Simm | 1984-12-25 |
| 4459720 | Suction nozzle unit | Heinz-Jurgen Ahlf, Bernd Fink, deceased | 1984-07-17 |
| 4454627 | Device for cleaning textile surfaces | Hans-Peter Simm, Christoph Hoesch, Renate Friedrichs | 1984-06-19 |
| 4437204 | Vacuum cleaner housing | — | 1984-03-20 |
| 4416034 | Front-suction arrangement on a vacuum cleaner | Heinz-Jurgen Ahlf | 1983-11-22 |
| 4360939 | Floor care device | Heinz-Gerhard Krumm, Peter Wulf | 1982-11-30 |
| 4349206 | Sealing arrangement for tubular elements of floor care device | Hans-Peter Simm, Klaus Hoffmann | 1982-09-14 |
| 4319380 | Telescopable guiding device for household apparatus | Hans-Peter Simm, Annegret Schlecht | 1982-03-16 |