ALEXANDRIA, Va., April 7 -- United States Patent no. D1,121,911, issued on April 7, was assigned to Beijing Roborock Technology Co. Ltd. (Beijing).
"Mopping cloth for cleaning robot" was invented by Lidong Zhao (Beijing) and Caiyun Hu (Beijing).
The patent was filed on July 15, 2025, under Application No. D/013,087.
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