ALEXANDRIA, Va., Oct. 8 -- United States Patent no. D1,097,404, issued on Oct. 7, was assigned to Beijing Roborock Technology Co. Ltd. (Beijing).
"Dust filter for cleaning appliance" was invented by Baokui Zhang (Beijing) and Yiping Qiu (Beijing).
The patent was filed on Aug. 8, 2024, under Application No. D/522,167.
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