ALEXANDRIA, Va., Feb. 11 -- United States Patent no. D1,112,609, issued on Feb. 10, was assigned to TIANJIN YUANZHI ENVIRONMENTAL PROTECTION TECHNOLOGY Co. LTD (Tianjin, China).
"Shower filter" was invented by Zhiyong Qian (Tianjin, China).
The patent was filed on April 30, 2025, under Application No. D/001,826.
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