ALEXANDRIA, Va., Aug. 5 -- United States Patent no. D1,139,781, issued on Aug. 4, was assigned to Century International Arms Inc. (West Palm Beach, Fla.).
"Upper receiver" was invented by Joseph Guerrera (Palm City, Fla.), Tanner Landis (Hobe Sound, Fla.) and Brett Tannone (Palm City, Fla.).
The patent was filed on June 24, 2025, under Application No. D/009,792.
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