ALEXANDRIA, Va., July 23 -- United States Patent no. D1,085,540, issued on July 22, was assigned to SHENZHEN WEITESHIJIA TECHNOLOGY Co. LTD. (Shenzhen, China).

"Portable foot grinder" was invented by Caixia Zhu (Jieyang, China).

The patent was filed on Dec. 23, 2022, under Application No. D/863,916.

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