ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,189, issued on Dec. 16, was assigned to Sturm Ruger & Co. Inc..
"Double stack magazine for firearm" was invented by Jacob Giles (Jerome, Ariz.), Brian Vuksanovich (Poland, Ohio) and Heath Putnam (Chino Valley, Ariz.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A double stack magazine for a firearm comprises a tubular magazine body defining a cavity for holding a stack of cartridges, a spring, and a follower biased by the spring for dispensing cartridges from the magazine. The cartridges may be rimmed cartridges in one embodiment arranged in a vertically staggered side-to-side arrangement. The magazine includes a lower double stack section and uppe...