ALEXANDRIA, Va., March 31 -- United States Patent no. D1,121,149, issued on March 31, was assigned to YIXUAN BRAND MANAGEMENT (JIANGSU) Co. LTD (Changzhou, China).

"Interdental brush" was invented by Yuying Yin (Changzhou, China), Yufang Tao (Changzhou, China) and Changchun Zhang (Changzhou, China).

The patent was filed on June 20, 2024, under Application No. D/948,228.

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