ALEXANDRIA, Va., April 15 -- United States Patent no. D1,122,435, issued on April 14, was assigned to Apothecary Products LLC (Burnsville, Minn.).
"Ear plug" was invented by Daniel Darst (Zimmerman, Minn.) and Julia Olson Augdahl (Prior Lake, Minn.).
The patent was filed on July 31, 2025, under Application No. D/015,991.
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