ALEXANDRIA, Va., June 16 -- United States Patent no. D1,129,881, issued on June 16, was assigned to RISUN TECHNOLOGY (SHENZHEN) Ltd. (Shenzhen, China).
"Electric toothbrush" was invented by Chang Ke (Shenzhen, China).
The patent was filed on July 19, 2024, under Application No. D/953,138.
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