ALEXANDRIA, Va., March 19 -- United States Patent no. D1,066,932, issued on March 18, was assigned to Shenzhen HYTD Technology Co. Ltd. (Shenzhen, China).
"Step stool" was invented by Chengting Hu (Shenzhen, China).
The patent was filed on Sept. 24, 2024, under Application No. D/964,749.
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