ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,437, issued on April 21, was assigned to Axon Enterprise Inc. (Scottsdale, Ariz.).

"Cartridge with inner surface grooves for a conducted electrical weapon" was invented by Michael E. Gish (Scottsdale, Ariz.), David Fulton (Scottsdale, Ariz.), William E. Maginn (San Diego), John Groff (San Francisco) and Samuel R. Driscoll (Phoenix).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cartridge for a conducted electrical weapon may comprise a body having a first end opposite a second end and an outer surface opposite an inner surface. A projectile may be disposed within the body. The inner surface of the body may define a plurality of grooves extending f...