ALEXANDRIA, Va., Aug. 5 -- United States Patent no. D1,139,959, issued on Aug. 4, was assigned to Nanjing Liliyugi Information Technology Co. Ltd. (Nanjing, China).
"Nasal mask cushion" was invented by Qingzhi Mao (Hangzhou, China).
The patent was filed on April 16, 2025, under Application No. D/999,120.
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