ALEXANDRIA, Va., March 19 -- United States Patent no. D1,067,409, issued on March 18, was assigned to Ningbo Singfun Electric Appliance Co. Ltd. (Ningbo, China).
"Tower fan" was invented by Yuchu Yao (Zhejiang, China), Lei Lan (Zhejiang, China), Qingfeng Tong (Zhejiang, China), Ya Xu (Zhejiang, China) and Jing Fu (Zhejiang, China).
The patent was filed on Sept. 2, 2022, under Application No. D/866,226.
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