ALEXANDRIA, Va., June 9 -- United States Patent no. 12,287,184, issued on April 29, was assigned to Next Level Cartridge Co. LLC (Post Falls, Idaho).
"Ammunition cartridge casing" was invented by Joshua Mahnke (Post Falls, Idaho).
According to the abstract* released by the U.S. Patent & Trademark Office: "An ammunition cartridge casing is provided having a primer body and a casing body. The primer body has an inner primer portion and an outer primer portion configured to nest in conformance with an outer surface of the inner primer portion. The outer surface of the inner primer portion provides a circumferential trench having a radially outwardly extending circumferential wall portion contiguous with an axially extending circumferential w...