ALEXANDRIA, Va., Sept. 30 -- United States Patent no. D1,150,732, issued on Sept. 29, was assigned to Shenzhen fourth quadrant technology Co. LTD. (Shenzhen, China).
"Vacuum cleaner" was invented by Bo Tan (Changde, China).
The patent was filed on Jan. 17, 2025, under Application No. D/986,581.
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