ALEXANDRIA, Va., March 3 -- United States Patent no. 12,566,238, issued on March 3, was assigned to SHOOTER DETECTION SYSTEMS LLC (Rowley, Mass.).

"Single unit outdoor gunshot detection" was invented by Richard Thomas Onofrio (Arlington, Mass.), Ronald A Fowler (Westford, Mass.) and Frank Ray Bachmann (Nashua, N.H.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Techniques for single unit outdoor gunshot detection are disclosed. Near-infrared band sensing collects infrared information using a gunshot sensor device. The collecting is performed by at least two infrared sensors in a single gunshot sensor device unit. Acoustic information is collected using the gunshot sensor device. The collecting acoustic infor...