ALEXANDRIA, Va., Sept. 30 -- United States Patent no. D1,149,801, issued on Sept. 29, was assigned to Ningbo Yousheng International Trade Co. Ltd. (Ningbo, China).
"Baby walker" was invented by Yongzhen Chen (Ningbo, China) and Zhiqi Liu (Zaozhuang, China).
The patent was filed on Nov. 14, 2025, under Application No. D/032,868.
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