ALEXANDRIA, Va., Aug. 20 -- United States Patent no. D1,089,538, issued on Aug. 19, was assigned to Taizhou Didu Environmental Protection Technology Co. Ltd. (Taizhou, China).
"Foam sprayer" was invented by Jinfu Zheng (Taizhou, China).
The patent was filed on April 11, 2025, under Application No. D/998,096.
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