ALEXANDRIA, Va., Sept. 23 -- United States Patent no. D1,094,693, issued on Sept. 23, was assigned to BMC Medical Co. Ltd. (Beijing).
"Nasal mask" was invented by Yajie Wang (Beijing), Mingzhao Zhou (Beijing) and Zhi Zhuang (Beijing).
The patent was filed on March 30, 2022, under Application No. D/832,779.
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