ALEXANDRIA, Va., Sept. 8 -- United States Patent no. D1,147,615, issued on Sept. 8, was assigned to Yongkang Xiaosi Technology Co. Ltd. (Jinhua, China) and Jiangsu Enwo Intelligent Manufacturing Co. Ltd. (Nantong, China).

"Cleaning machine" was invented by Chao Zhou (Jinhua, China) and Jinlong Yan (Nantong, China).

The patent was filed on Nov. 18, 2024, under Application No. D/973,764.

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