ALEXANDRIA, Va., July 14 -- United States Patent no. D1,133,807, issued on July 14, was assigned to Demexgrout LLC (Boulder, Colo.).
"Dual cartridge for dispensing tile grout" was invented by Xiumin Guo (Taizhou, China).
The patent was filed on July 31, 2024, under Application No. D/955,299.
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