ALEXANDRIA, Va., Dec. 9 -- United States Patent no. D1,105,627, issued on Dec. 9, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).
"Hearing protection cups" was invented by Jacob T. Lusson (Richfield, Minn.).
The patent was filed on Sept. 20, 2023, under Application No. D/912,597.
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