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US Patent D989983 Auxiliary obstacle-surmounting ramp for cleaning robot

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Patent
Patent
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Patent attributes

Patent Applicant
Beijing Roborock Technology
Beijing Roborock Technology
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Current Assignee
Beijing Roborock Technology
Beijing Roborock Technology
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
D9899830
Date of Patent
June 20, 2023
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Patent Application Number
355150100
Date Filed
August 12, 2022
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Patent Citations
‌
US Patent D923905 Curb ramp
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US Patent D758612 Rubber threshold ramp
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US Patent 9462920 Evacuation station
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US Patent D796059 Rubber threshold ramp
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US Patent D969517 Door mat
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Patent Primary Examiner
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Richard E. Chilcot, Jr.
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CPC Code
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E04F 11/108
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E01C 11/222
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A61G 3/061
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