US Patent D838823 Air purifier

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Is a

Patent

Patent attributes

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

D838823

Patent Inventor Names

Xianghui Yu0

Date of Patent

January 22, 2019

Patent Application Number

29613392

Date Filed

August 9, 2017

Patent Citations Received

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US Patent 11872330 Volatile composition dispenser with increased membrane exposure and volatile composition weight loss

‌

US Patent D1013131 Heater

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US Patent D1029223 Air freshening device

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US Patent D1030016 Fan heater

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US Patent D988491 Air freshener device

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US Patent D989259 Space heater

Patent Primary Examiner

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David G Muller

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