ALEXANDRIA, Va., March 24 -- United States Patent no. D1,119,318, issued on March 24, was assigned to Kohler (China) Investment Co. Ltd. (Shanghai).
"Toothbrush" was invented by Chia Ying Lee (Chicago), Fei Ying Su (Shanghai), Ji Min Niu (Beijing) and Hui Ren (Beijing).
The patent was filed on Dec. 12, 2023, under Application No. D/920,635.
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