ALEXANDRIA, Va., July 15 -- United States Patent no. D1,131,958, issued on June 23, was assigned to Beijing Roborock Technology Co. Ltd. (Beijing).
"Main unit of vacuum cleaner" was invented by Zechen Yu (Beijing) and Fanwei Meng (Beijing).
The patent was filed on Feb. 8, 2025, under Application No. D/524,124.
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