ALEXANDRIA, Va., Dec. 2 -- United States Patent no. D1,104,177, issued on Dec. 2, was assigned to Yongkang Zuojian Industry and Trade Co. Ltd. (Yongkang, China).
"Dumbbell" was invented by Jianjun Li (Luzhou, China).
The patent was filed on April 2, 2024, under Application No. D/935,604.
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