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US Patent D923453 Door lock

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Patent
Patent

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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
D923453
Patent Inventor Names
Qiang Chen0
Date of Patent
June 29, 2021
Patent Application Number
29728828
Date Filed
March 20, 2020
Patent Citations
‌
US Patent 10240365 Electronic lock system having proximity mobile device
‌
US Patent 10049520 Access system with persistent display
Patent Primary Examiner
Doris Clark
Doris Clark
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