ALEXANDRIA, Va., Nov. 6 -- United States Patent no. D1,101,139, issued on Nov. 4, was assigned to The SmartMask LLC (Riverside, Conn.).
"Respiratory mask filter" was invented by Pamela Gabriel (Riverside, Conn.) and Robert Gabriel (Riverside, Conn.).
The patent was filed on Nov. 28, 2022, under Application No. D/861,173.
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