ALEXANDRIA, Va., July 28 -- United States Patent no. D1,137,708, issued on July 28, was assigned to WUHAN ZJZK TECHNOLOGY Co. LTD. (Wuhan, China).
"Hair growth cap" was invented by Liwu Lin (Wuhan, China).
The patent was filed on July 29, 2025, under Application No. D/015,385.
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