ALEXANDRIA, Va., March 31 -- United States Patent no. D1,121,140, issued on March 31, was assigned to BMC (TIANJIN) MEDICAL Co. LTD. (Tianjin, China).
"Respirator" was invented by Lulu Wang (Tianjin, China), Mingzhao Zhou (Tianjin, China) and Zhi Zhuang (Tianjin, China).
The patent was filed on March 5, 2024, under Application No. D/931,030.
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