ALEXANDRIA, Va., Oct. 28 -- United States Patent no. D1,099,421, issued on Oct. 21, was assigned to Slinph Technologies Co. Ltd. (Shenzhen, China).
"Hair growth comb" was invented by Jian Zou (Shenzhen, China).
The patent was filed on Feb. 19, 2024, under Application No. D/928,998.
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