ALEXANDRIA, Va., July 14 -- United States Patent no. D1,134,641, issued on July 14, was assigned to Huangjie (Hangzhou) Industrial Co. Ltd. (Hangzhou, China).
"Adjustable dumbbell" was invented by Qingsheng Liu (Hangzhou, China) and Fengjiao Liu (Hangzhou, China).
The patent was filed on Jan. 16, 2026, under Application No. D/043,086.
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