ALEXANDRIA, Va., July 7 -- United States Patent no. D1,132,617, issued on July 7, was assigned to JINHUA ZHENFEI TOOLS Co. LTD (Jinhua, China).

"Rolling stool" was invented by Zheng Ying (Jinhua, China) and Hao Ying (Jinhua, China).

The patent was filed on Jan. 14, 2025, under Application No. D/984,497.

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