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| Number | Title | Issue Date |
| 7200892 | Robot cleaner with adjustable brush A robot cleaner with a pivotable brush which pivots in accordance with a condition of a floor surface to be cleaned. The pivotal brush prevents overload to a suction motor caused by excessive contact of the brush with the floor surface to be cleaned. The robot clean... | 04/10/2007 |
| 4447931 | Remotely controlled vacuum cleaner nozzle A nozzle for a vacuum cleaner which is provided with a suction conduit for attachment to the vacuum cleaner housing. The nozzle has two working members alternately in contact with the work surface. Either of these working members can be alternately placed... | 05/15/1984 |