Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
March 17, 2020
Patent Application Number
15857357
Date Filed
December 28, 2017
Patent Citations Received
Patent Primary Examiner
Patent abstract
Disclosed herein is a vacuum cleaner including a brush to rotate and collect foreign materials on the floor, and a grinder to grind the foreign materials collected through the brush. Since the hair-like foreign materials wound around the brush are grinded and cut by the grinders, a cleaning cycle of the brush can be extended.
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