ALEXANDRIA, Va., April 9 -- United States Patent no. D1,070,184, issued on April 8.
"Smart protective mask" was invented by Haolun Tong (Shenzhen, China), Wei Wang (Shenzhen, China), Jiaqi Xie (Shenzhen, China) and Zijun Chen (Shenzhen, China).
The patent was filed on July 21, 2023, under Application No. D/880,343.
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