ALEXANDRIA, Va., Dec. 9 -- United States Patent no. D1,104,546, issued on Dec. 9, was assigned to Lan QingQing (Shijiazhuang, China).
"Cushion" was invented by Lingling Hua (Tianjin, China).
The patent was filed on Sept. 12, 2023, under Application No. D/902,312.
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