ALEXANDRIA, Va., Jan. 29 -- United States Patent no. D1,059,507, issued on Jan. 28, was assigned to Zhejiang Zuojian Industry and Trade Co. Ltd. (Jinhua, China).
"Dumbbell" was invented by Zhaohong Yu (Yongkang, China).
The patent was filed on Sept. 25, 2024, under Application No. D/964,984.
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