ALEXANDRIA, Va., Jan. 29 -- United States Patent no. D1,059,198, issued on Jan. 28, was assigned to HANGZHOU DENGHONG TECHNOLOGY Co. LTD. (Zhejiang, China).
"Smart doorbell" was invented by Jiayin Song (Central, Hong Kong).
The patent was filed on July 12, 2022, under Application No. D/846,006.
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