ALEXANDRIA, Va., Jan. 13 -- United States Patent no. D1,108,815, issued on Jan. 13, was assigned to Wenzhou Yunshang Biological Technology Co. Ltd. (Wenzhou, China).
"Tongue brush" was invented by Yun Zhang (Wenzhou, China).
The patent was filed on June 5, 2024, under Application No. D/945,807.
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