ALEXANDRIA, Va., Feb. 17 -- United States Patent no. D1,114,441, issued on Feb. 17, was assigned to BEIJING ROBOROCK TECHNOLOGY Co. LTD. (Beijing).
"Floor washing appliance" was invented by Xin Li (Beijing), Fanwei Meng (Beijing), Zechen Yu (Beijing) and Bin Huang (Beijing).
The patent was filed on July 8, 2024, under Application No. D/521,753.
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