ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,428, issued on April 21, was assigned to BAE Systems PLC (London).

"Blast attenuation device" was invented by Richard Peter Lewin (Cumbria, Great Britain) and Peter Andrew Griffith (Cumbria, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A blast attenuation device for a gun tube. The blast attenuation device has a first wall section which defines a first chamber, which extends from an inlet end having an inlet aperture to an outlet end having an outlet aperture. The blast attenuation device also has a second wall section which defines a second chamber, which extends from an inlet end having an inlet aperture to an outlet end having an...